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References

Alfken JD (1907) Neue paläarktische Halictus-Arten. Zeitschrift für Systematische Hymenopterologie und Dipterologie 7: 202-206.

Ashmead WH (1890) On the Hymenoptera of Colorado; descriptions of new species, notes, and a list of the species found in the state. Bulletin of the Colorado Biological Association 1: 3-46. [Andrena erythrogaster Ashmead, 1890, Andrena (Andrena) frigida Smith, 1853, Andrena nigrihirta (Ashmead, 1890), Andrena trizonata (Ashmead, 1890), Melecta (Melecta) thoracica Cresson, 1875, Neolarra (Neolarra) pruinosa Ashmead, 1890]

Ashmead WH (1902) A new bumble bee from Colorado. Entomological News 13: 50.

Ashmead WH (1902) Papers from the Harriman Alaska Expedition. XXVIII. Hymenoptera. Proceedings of the Washington Academy of Sciences 4: 117-274. [Bombus mckayi Ashmead, 1902] https://doi.org/10.5962/bhl.part.18572

Ashmead WH (1903) A new Paranomia from British Columbia. The Canadian Entomologist 35(9): 243. https://doi.org/10.4039/Ent35243-9

Blüthgen P (1925) Beiträge zur Synonymie der Bienengattung Halictus Latr. IV. Deutsche entomologische Zeitschrift (Berlin) 1925: 385-419.

Cockerell TDA (1896) Prosopis subtilis. The Canadian Entomologist 28: 42. https://doi.org/10.4039/Ent2842-2

Cockerell TDA (1896) New species of Prosapis. Psyche 7(supplement): 26-32. https://doi.org/10.1155/1896/24089

Cockerell TDA (1896) Some additional species of Prosapis. Psyche 7(supplement): 437-439.

Cockerell TDA (1897) New species of Andrena from North America. The Entomologist 30: 305-309.

Cockerell TDA (1898) The North American bees of the genus Prosapis. The Entomologist 31: 185-192.

Cockerell TDA (1905) New American bees. Proceedings of the Biological Society of Washington 18: 177-184. [Habropoda tristissima (Cockerell, 1904)]

Cockerell TDA (1906) Descriptions and records of bees—VIII. Annals and Magazine of Natural History, Series 7 17(98): 222-230. [Panurginus cressoniellus Cockerell, 1898] https://doi.org/10.1080/00222930608562513

Cockerell TDA (1910) Descriptions and records of bees.—XXIV. Annals and Magazine of Natural History, Series 8 5(25): 22-30. [Brachymelecta californica (Cresson, 1878)] https://doi.org/10.1080/00222931008692722

Cockerell TDA, Sumner R (1931) Rocky Mountain Bees. III. American Museum Novitates 490: 1-15.

Crawford JC (1915) New North American Hymenoptera. Insecutor Inscitiae Menstruus 3: 107-109. [Holcopasites stevensi Crawford, 1915]

Crawford JC (1915) The bee genus Holcopasites Ashmead. Insecutor Inscitiae Menstruus 3: 123-126. [Holcopasites illinoiensis (Robertson, 1891)]

Davidson A (1896) On the nesting habits of Anthidium consimile. Entomological News 7: 22-26.

Linsley EG, MacSwain JW (1961) New Diandrena associated with Oenothera and notes concerning other species (Hymenoptera: Andrenidae). Pan-Pacific Entomologist 37: 31-41.

Lovell JH (1909) The bees of Massachusetts: Osmia and Sphecodes. Entomological News 20: 122-126. [Sphecodes confertus Say, 1837, Sphecodes johnsonii Lovell, 1909]

Lovell JH (1909) The bees of Virginia-Prosopis, Sphecodes, Osmia. Entomological News 20: 412-417. [Sphecodes banksii Lovell, 1909]

Lovell JH (1910) The Prosopididae of southern Maine. Psyche 17(5): 177-185.

Lovell JH (1911) New records of bees: Sphecodes and Prosopis (Hym.). Entomological News 22: 211-215. [Sphecodes confertus Say, 1837]

Robertson C (1896) Notes on bees of the genus Prosopis, with descriptions of new species. The Canadian Entomologist 28(5): 136-138. https://doi.org/10.4039/ent28136-5

Swenk MH, Cockerell TD (1910) New bees of the genus Prosopis. Entomological News 21: 67-71.

Viereck HL (1902) Descriptions of North American bees. The Canadian Entomologist 34(12): 325-331. [Megachile addenda Cresson, 1878] https://doi.org/10.4039/Ent34325-12

Viereck HL (1903) Hymenoptera of Beulah, New Mexico. Transactions of the American Entomological Society 29(1): 43-100. http://www.jstor.org/stable/25076749

Viereck HL (1904) A bee visitor to Pontederia (Pickerel Weed). Entomological News 15: 244-246.

Viereck HL (1924) Prodromus of Andrena, a genus of bees. The Canadian Entomologist 56(1): 19-24. [Andrena buckelli Viereck, 1924, Andrena (Andrena) frigida Smith, 1853, Andrena (Andrena) schuhi LaBerge, 1980] https://doi.org/10.4039/ent5619-1

Viereck HL (1924) Prodromus of Andrena, a genus of bees. The Canadian Entomologist 56(2): 28-32. https://doi.org/10.4039/ent5628-2

Viereck HL (1924) Prodromus of Andrena, a genus of bees. The Canadian Entomologist 56(4): 76-81. [Andrena birtwelli Cockerell, 1901, Andrena (Andrena) perarmata Cockerell, 1898] https://doi.org/10.4039/ent5674

Viereck HL (1925) A new bee of the genus Andrena, in the collection of the Academy of Natural Sciences of Philadelphia. 51(2): 135-136. [Andrena (Andrena) frigida Smith, 1853] http://www.jstor.org/stable/25077129

Viereck HL (1926) Descriptions of seven andrenids in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences, Series 4 15: 399-408.

Viereck HL, Cockerell TDA, Titus ESG, Crawford JC, Swenk MH (1904) Synopsis of bees of Oregon, Washington, British Columbia and Vancouver. The Canadian Entomologist 36(4): 93-100. https://doi.org/10.4039/ent3693-4

Viereck HL, Cockerell TDA, Titus ESG, Crawford JC, Swenk M (1904) Synopsis of bees of Oregon, Washington, British Columbia and Vancouver.-II. The Canadian Entomologist 36(6): 157-161. https://doi.org/10.4039/ent36157-6

Viereck HL, Cockerell TDA, Titus ESG, Crawford JC, Swenk MH (1904) Synopsis of bees of Oregon, Washington, British Columbia and Vancouver.-III. The Canadian Entomologist 36(7): 189-196. [Andrena (Andrena) hemileuca Viereck, 1904, Andrena (Andrena) saccata Viereck, 1904, Andrena (Andrena) washingtoni Cockerell, 1901] https://doi.org/10.4039/ent36189-7

Viereck HL, Cockerell TD, Titus ES, Crawford JC, Swenk MH (1904) Synopsis of bees of Oregon. Washington, British Columbia and Vancouver.-III. The Canadian Entomologist 36(8): 221-232. [Andrena (Andrena) hemileuca Viereck, 1904, Andrena (Andrena) saccata Viereck, 1904] https://doi.org/10.4039/ent36221-8

Ashmead WH (1900) Report upon the aculeate Hymenoptera of the islands of St. Vincent and Grenada, with additions to the parasitic Hymenoptera and a list of the described Hymenoptera of the West Indies. Transactions of the Royal Entomological Society of London 1900: 207-367. https://doi.org/10.1111/j.1365-2311.1900.tb02379.x

Atwood CE (1933) Studies on the Apoidea of western Nova Scotia with special reference to visitors to Apple bloom. Canadian Journal of Research 9(5): 443-457. https://doi.org/10.1139/cjr33-101

Barrows EM (1973) Soil nesting by wood-inhabiting halictine bees, Augochlora pura and Lasioglossum coeruleum (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 46(4): 496-499. https://www.jstor.org/stable/25082599

Barrows EM (1974) Pheromones characteristic of individuals in Lasioglossum zephyrum. Journal of the Kansas Entomological Society 47(4): 540. https://www.jstor.org/stable/25082698

Barrows EM, Snyder TP (1974) Halictine bee prey of Philanthus gibbosus (Hymenoptera: Sphecidae). Entomological News 84: 314-316.

Cockerell TDA (1898) Some bees of the genus Megachile from New Mexico and Colorado. Annals and Magazine of Natural History, Series 7 1(): 125-130.

Cockerell TDA (1898) New and little known bees from Washington State. Proceedings of the Academy of Natural Sciences of Philadelphia 50: 50-56.

Cockerell TDA (1899) Notes on American bees. Entomologist 32: 154-159.

Cockerell TDA (1900) The New Mexico bees of the genus Megachile and a new Andrena. Annals and Magazine of Natural History, Series 7 6(31): 7-20. https://doi.org/10.1080/00222930008678335

Cockerell TDA (1902) Hymenoptera of southern California I. Bulletin of the Southern California Academy of Sciences 1: 70-71.

Cockerell TDA (1904) Some bees from San Miguel County, New Mexico. Entomologist 37: 5-9. [Colletes gilensis Cockerell, 1897]

Cockerell TDA (1904) Two new bees. Entomological News 15: 32-34.

Cockerell TDA (1908) A new name in Megachile. The Canadian Entomologist 40(12): 460. https://doi.org/10.4039/Ent40460a-12

Cockerell TDA (1912) Canadian bees in the British Museum. The Canadian Entomologist 44(12): 354-358. [Megachile dentitarsus Sladen, 1919, Sphecodes hudsoni Cockerell, 1911] https://doi.org/10.4039/Ent44354-12

Cockerell TDA (1913) Descriptions and records of bees.—LII. Annals and Magazine of Natural History, Series 8 11(66): 530-542. https://doi.org/10.1080/00222931308693352

Cockerell TDA (1914) Descriptions and records of bees.-LVIII. Annals and Magazine of Natural History, Series 8 13(76): 424-433. [Megachile albitarsis Cresson, 1872] https://doi.org/10.1080/00222931408693504

Cockerell TDA (1915) Descriptions and records of bees.—LXVI. Annals and Magazine of Natural History, Series 8 15(88): 341-350. https://doi.org/10.1080/00222931508693649

Cockerell TDA (1924) Descriptions and records of bees.—C. Annals and Magazine of Natural History, Series 9 13(78): 594-606. https://doi.org/10.1080/00222932408633087

Cockerell TDA (1925) Bees in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences (4)14: 185-215.

Cockerell TDA (1928) Bees collected in Siberia in 1927. Annals and Magazine of Natural History, Series 10 1(3): 345-361. [Chelostoma rapunculi (Lepeletier, 1841)] https://doi.org/10.1080/00222932808672792

Cockerell TDA (1930) Siberian bees. Entomologist 63: 184.

Cockerell TDA (1931) Descriptions and records of bees.—CXXVI. Annals and Magazine of Natural History, Series 10 7(39): 273-281. https://doi.org/10.1080/00222933108673310

Colla SR, Dumesh S (2010) The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141: 39-68.

Cresson ET (1872) Hymenoptera Texana. Transactions of the American Entomological Society 4: 153-292. [Heriades variolosus variolosus (Cresson, 1872), Megachile albitarsis Cresson, 1872]

Cresson ET (1878) Descriptions of new North American Hymenoptera in the collection of the American Entomological Society. Transactions of the American Entomological Society 7: 61-136. [Calliopsis coloradensis Cresson, 1878, Calliopsis scitula scitula (Cresson, 1878), Panurginus atriceps (Cresson, 1878), Panurginus cressoniellus Cockerell, 1898, Epeolus americanus (Cresson, 1878), Holcopasites pulchellus (Cresson, 1878), Biastes (Neopasites) fulviventris (Cresson, 1878), Nomada snowii Cresson, 1878, Brachymelecta californica (Cresson, 1878), Megachile addenda Cresson, 1878, Melecta (Melecta) pacifica pacifica Cresson, 1878, Atoposmia abjecta abjecta (Cresson, 1878)]

Cresson ET (1879) Descriptions of new North American Hymenoptera in the collection of the American Entomological Society. Transactions of the American Entomological Society 7: 201-214. [Epeolus americanus (Cresson, 1878), Melecta (Melecta) pacifica fulvida Cresson, 1879, Zacosmia maculata maculata (Cresson, 1879), Eucera (Synhalonia) acerba (Cresson, 1879)] https://doi.org/10.2307/25076373

Dours JA (1873) Hyménoptères du bassin mediterranéen Andrena (suite). Biareolina, Eucera. Revue et Magazin de Zoologie 3: 274-325.

Dufour L (1841) Recherches anatomiques et physiologiques sur les Orthoptères, les Hyménoptères et les Néuroptères. Deuxieme partie. Mémoires de l’Académie des Sciences de l’Institut de France 7: 265-647 (Part II: 374-556).

Eickwort GC, Matthews RW, Carpenter J (1981) Observations on the nesting behavior of Megachile rubi and M. texana with a discussion of the significance of soil nesting in the evolution of megachilid bees (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 54: 557-570.

Fabricius JC (1787) Mantissa Insectorum sistens eorum species nuper detectas adiectis characteribus genericis, differentiis, specificis, emendationibus. Hafniae (Proft) 1. 20 + 348 pp.

Fabricius JC (1793) Entomologia systematica emendata et aucta, secundum classes, ordines, genera, species adjectis synonymis, locis, observationibus, descriptionibus. Hafniae (Proft), 2, 519 pp.

Friese H (1903) Neue Arten der Bienen gattung Megachile aus Amerika. Zeitschrift für Systematische Hymenopterologie und Dipterologie 3(4): 246-248.

Frohlich DR, Parker FD (1983) Nest building behavior and development of the sunflower leafcutter bee: Eumegachile (Sayapis) pugnata (Say) (Hymenoptera: Megachilidae). Psyche 90: 193-209.

Fye RE (1965) Biology of Apoidea taken in trap nests in northwestern Ontario (Hymenoptera). The Canadian Entomologist 97: 863-877.

Gerstaecker CEA (1869) Beiträge zur näheren Kenntnis einiger Bienen-Gattungen. Entomologische Zeitung 30: 315-367.

Gibbs J, Sheffield CS (2009) Rapid range expansion of the Wool-Carder Bee, Anthidium manicatum (Linnaeus) (Hymenoptera: Megachilidae), in North America. Journal of the Kansas Entomological Society 82: 21-29.

Gonzalez VH, Griswold TL (2007) A review of the North and Central American Megachile subgenus Argyropile Mitchell (Hymenoptera: Megachildae). Zootaxa 1461: 1-14.

Krombein KV (1953) A note on the nesting habits of Megachile texana Cresson. Proceedings of the Entomological Society of Washington 55: 84-85.

Lovell JH, Cockerell TDA (1907) The Megachilidae of Southern Maine. Psyche 14: 15-21.

Magnum WA, Brooks RW (1997) First records of Megachile (Callomegachile) sculpturalis Smith (Hymenoptera: Megachilidae) in the continental United States. Journal of the Kansas Entomological Society 70: 146-148.

Medler JT (1959) A note on Megachile centuncularis (Linn.) in Wisconsin (Hymenoptera: Megachilidae). The Canadian Entomologist 91: 113-115.

Medler JT (1964) A note on Megachile (Sayapis) pugnata pugnata Say in trap-nests in Wisconsin (Hymenoptera: Megachilidae). The Canadian Entomologist 96: 918-921.

Medler JT (1965) A note on Megachile mendica Cresson in trap nests in Wisconsin (Hymenoptera: Megachilidae). Proceedings of the Entomological Society of Washington 67: 113-116.

Medler JT (1966) A resin bee using trap-nests in Wisconsin and a note on other resin bees (Hymenoptera: Megachilidae). Entomological News 77: 228-230.

Medler JT, Koerber TW (1958) Biology of Megachile relativa Cresson in trap-nests in Wisconsin. Annals of the Entomological Society of America 51: 337-344.

Medler JT, Lussenhop JF (1968) Leaf-cutter bees of Wisconsin (Hymenoptera: Megachilidae). University of Wisconsin Research Bulletin 274: 1-80.

Michener CD (1947) Bees of a limited area in southern Mississippi (Hymenoptera; Apoidea). American Midland Naturalist 38: 443-455.

Michener CD (1953) The biology of a leafcutter bee (Megachile brevis) and its associates. University of Kansas Science Bulletin 35: 1659-1748.

Michener CD (1962) Observations on the classification of the bees commonly placed in the genus Megachile (Hymenoptera: Apoidea). Journal of the New York Entomological Society 70: 17-29.

Michener CD (2007) The Bees of the World. 2nd Edition Johns Hopkins University Press, Baltimore. xvi + 953 pp. [Holcopasites pulchellus (Cresson, 1878), Chelostoma campanularum (Kirby, 1802)]

Michener CD, McGinley RJ, Danforth BN (1994) The Bee Genera of North and Central America (Hymenoptera: Apoidea). Washington, Smithsonian Institution Press. vii + 209 pp.

Mitchell TB (1924) New megachilid bees. Journal of the Elisha Mitchell Scientific Society 40: 154-165.

Mitchell TB (1926) New species of Megachile, with notes and corrections (Hymenoptera). Transactions of the American Entomological Society 52(2): 111-118. https://www.jstor.org/stable/25077157

Mitchell TB (1927) New megachilid bees. Psyche 34: 104-121.

Mitchell TB (1934) A revision of the genus Megachile in the Nearctic region. Part I. Classification and descriptions of new species (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 59(4): 295-361. [Megachile albitarsis Cresson, 1872] https://www.jstor.org/stable/25077304

Mitchell TB (1935) A revision of the genus Megachile in the Nearctic region. Part II. Morphology of the male sternites and genital armature and the taxonomy of the subgenera Litomegachile, Neomegachile and Cressoniella. Transactions of the American Entomological Society 61(1): 1-44. https://www.jstor.org/stable/25077331

Mitchell TB (1935) A revision of the genus Megachile in the Nearctic region. Part III. Taxonomy of the subgenera Anthemois and Delomegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 61(3): 155-205. https://www.jstor.org/stable/25077339

Mitchell TB (1936) A revision of the genus Megachile in the Nearctic region. Part IV. Taxonomy of the subgenera Xanthosarus, Phaenosarus, Megachiloides and Derotropis (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62(2): 117-166. [Megachile dentitarsus Sladen, 1919] https://www.jstor.org/stable/2507737

Mitchell TB (1937) A revision of the genus Megachile in the Nearctic region. Part VI. Taxonomy of subgenera Argyropile, Leptorachis, Pseudocentron, Acentron and Melanosarus (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 63(1): 45-83. [Megachile xylocopoides Smith, 1853, Megachile albitarsis Cresson, 1872] https://www.jstor.org/stable/25077387

Mitchell TB (1937) A revision of the genus Megachile in the Nearctic region. Part VII. Taxonomy of the subgenus Sayapis (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 63(2): 175-206. https://www.jstor.org/stable/25077393

Mitchell TB (1937) A revision of the genus Megachile in the Nearctic region. Part V. Taxonomy of the subgenus Xeromegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62(4): 323-382. https://www.jstor.org/stable/25077381

Mitchell TB (1937) A revision of the genus Megachile in the Nearctic region. Part VIII. Taxonomy of the subgenus Chelostomoides, addenda and index (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 63(4): 381-421. [Megachile discorhina Cockerell, 1924] https://www.jstor.org/stable/25077402

Mitchell TB (1943) Records and descriptions in the megachilid subgenus Argyropile (Hymenoptera, Megachilidae). The Pan-Pacific Entomologist 19(1): 12-16.

Mitchell TB (1973) A Subgeneric Revision of the Bees of the Genus Coelioxys of the Western Hemisphere. Contribution from the Department of Entomology, North Carolina State University; Raleigh, NC. iii + 129 pp.

Mitchell TB (1980) A Generic Revision of the Megachiline Bees of the Western Hemisphere. Contribution from the Department of Entomology, North Carolina State University; Raleigh, NC. ii + 95 pp.

Neff JL Simpson BB (1991) Nest biology and mating behavior of Megachile fortis in Central Texas (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 64: 324-336.

Nylander W (1852) Reviso synoptica apum borealium, comparatis speciebus Europae mediae. Notiser ur Sällskapets pro Fauna et Flora Fennica Förhandlingar 2: 225-348.

O’Toole C, Raw A (1991) Bees of the World. Blandford, London, UK. 192 pp.

Packer L (1987) The triungulin larva of Nemognatha (Pauronemognatha) punctulata LeConte (Coleoptera: Meloidae) with a description of the nest of its host – Megachile brevis pseudobrevis Say (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 60: 280-287.

Paiero SM, Buck M (2003) The giant resin bee, Megachile sculpturalis Smith, and other newly introduced and newly recorded native Megachilidae and Andrenidae (Apoidea) from Ontario. Journal of the Entomolgical Society of Ontario 134: 141-143.

Panzer GWF (1798) Faunae Insectorum Germanicae initia oder Deutschlands Insecten. Hymenoptera 2, Volume 6, Felssecker, Nürnberg, 24 pp. [Chelostoma rapunculi (Lepeletier, 1841)]

Parker FD, Bohart GE (1979) Dolichostelis, a new genus of parasitic bees (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 52(1): 138-153. https://www.jstor.org/stable/25083888

Pengelly, D.H. 1955. The biology of bees of the genus Megachile with special reference to their importance in alfalfa seed production in southern Ontario. Ph.D. Thesis, Cornell University; Ithaca, NY.

Provancher, L. 1882. Faune Canadienne. Les Insectes Hyménoptères. Naturaliste Canadien 13: 225-242.

Provancher, L. 1883. Petite faune entomologique du Canada et particulierement de la province de Quebec. Quatrieme Ordre, les Hymenopteres. C. Darveau, Quebec. 830 pp.

Provancher L (1888) Additions et Corrections au Volume II de la Faune Entomologique du Canada Traitant des Hyménoptères. Quebec, Darveau. [Macropis (Macropis) ciliata Patton, 1880, Agapostemon obliquus (Provancher, 1888)]

Reed, E.B. 1871. Notes on Megachile brevis, Say. Canadian Entomologist 3: 210-211.

Richards KW (1984) Alfalfa leafcutter bee management in western Canada. Agriculture Canada Publication 1495E. 53 pp.

Robertson C (1895) Notes on bees, with descriptions of new species. Transactions of the American Entomological Society 22: 115-125.

Robertson C (1903) Synopsis of Megachilidae and Bombinae. Transactions of the American Entomological Society 29: 163-178.

Robertson C (1903) Synopsis of Nomadinae. The Canadian Entomologist 35(6): 172-179. https://doi.org/10.4039/Ent35172-6

Say, T. 1823. A description of some new species of Hymenopterous Insects. Western Quarterly Report 2: 71-82.

Schrottky C (1902) Ensaio sôbre abelhas solitárias do Brazil. Revista do Museu Paulista 5: 330–613.

Sheffield CS, Westby SM (2007) The male of Megachile nivalis Friese, with an updated key to members of the subgenus Megachile s. str. (Hymenoptera: Megachilidae) in North America. Journal of Hymenoptera Research 16: 178-191.

Sheffield, C. S., P. G. Kevan, S. M. Westby, and R. F. Smith. 2008. Diversity of cavity-nesting bees (Hymenoptera: Apoidea) within apple orchards and wild habitats in the Annapolis Valley, Nova Scotia, Canada. Canadian Entomologist 140: 235-249.

Sheffield, C.S., M. Richards, and T. Griswold. 2010. Discovery of the Old World bee, Megachile (Pseudomegachile) ericetorum (Hymenoptera: Megachilidae), in Ontario, Canada. Journal of the Entomological Society of Ontario 141: 85-92.

Smith, F. 1879. Descriptions of New Species of Hymenoptera in the Collection of the British Museum. London. xxi + 240 pp.

Snelling RR (1990) A review of the native North American bees of the genus Chalicodoma (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum of Los Angeles County 421: 1-39. [Megachile discorhina Cockerell, 1924]

Spinola, M. 1808. Insectorum Liguriae Species Novae aut Rariores. 2: 1-262.

Strand, E. 1915. Apidae von Tsingtau. Entomologische Mitteilungen 4: 69-75.

Strand Ε (1917) Ueber einige Apiden des deutschen Entomologischen Museums. Archiv für Naturgeschichte 83A(11): 58-68.

Stephen WP (1956) Notes on the biologies of Megachile frigida Smith and M. inermis Provancher (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist 32: 95-101.

Tepedino VJ, Frohlich DR (1982) Mortality factors, pollen utilization, and sex ratio in Megachile pugnata Say (Hymenoptera: Megachilidae), a candidate for commercial sunflower pollination. Journal of the New York Entomological Society 90: 269-274.

Titus ESG (1906) Some notes on the Provancher Megachilidae. Proceedings of the Entomological Society of Washington 7: 149-165. [Megachile albitarsis Cresson, 1872]

Trostle G, Torchio PF (1994) Comparative nesting behavior and immature development of Megachile rotundata (Fabricius) and Megachile apicalis Spinola (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 67: 53-72.

Viereck HL (1916) The Hymenoptera, or wasp-like insects of Connecticut. Connecticut State Geological and Natural History Survey Bulletin 22: 1-824. [Sphecodes confertus Say, 1837]

Alfken JD (1929) Entomologische Ergebnisse der schwedischen Kamtschatka-Expedition 1920–1922. 21. Apidae, excluding genus Bombus. Arkiv för Zoologi 20: 1-8.

Alfken JD (1937) Beitrag zur Kenntnis der Bienenfauna von Mittel-Italien. I. Bollettino dell'Istituto di Entomologia delle Università degli Studi di Bologna 9: 104-112.

Armbruster WS, Guinn DA (1989) The solitary bee fauna (Hymenoptera: Apoidea) of interior and arctic Alaska: flower associations, habitat use, and phenology. Journal of the Kansas Entomological Society 62(4): 468-483. [Panurginus ineptus Cockerell, 1922, Epeolus americanus (Cresson, 1878), Nomada aquilarum Cockerell, 1903] http://www.jstor.org/stable/25085123

Ascher JS (2001) Hylaeus hyalinatus Smith, a European bee new to North America, with notes on other adventive bees (Hymenoptera: Apoidea). Proceedings of the Entomological Society of Washington 103(1): 184-190. https://biostor.org/reference/57089

Ascher JS, Gambino P, Droege S (2006) Adventive Hylaeus (Spatulariella) Popov in the new world (Hymenoptera: Apoidea: Colletidae). Proceedings of the Entomological Society of Washington 108(1): 237-239. https://biostor.org/reference/55432

Atwood CE (1934) The genera Halictus and Andrena in western Nova Scotia. Canadian Journal of Research 10(2): 199-220. https://doi.org/10.1139/cjr34-017

Barrows EM (1974) Aggregation behavior and response to sodium chloride in females of a solitary bee, Augochlora pura (Hymenoptera: Halictidae). The Florida Entomologist 57(2): 189-193. http://www.jstor.org/stable/3493482

Barrows EM (1978) Male behavior in Andrena erigeniae (Hymenoptera: Andrenidae) with comparative notes. Journal of the Kansas Entomological Society 51(4): 798-806. http://www.jstor.org/stable/25083870

Batra SWT (1966) The life cycle and behavior of the primitively social bee Lasioglossum zephyrum (Halictidae). University of Kansas Science Bulletin 46: 359-423.

Batra SWT (1980) Ecology, behavior, pheromones, parasites and management of the sympatric vernal bees Colletes inaequalis, C. thoracicus and C. validus. Journal of the Kansas Entomological Society 53(3): 509-538.

Batra SWT (1990) Bionomics of a vernal solitary bee Andrena (Scrapteropsis) alleghaniensis Viereck in the Adirondacks of New York (Hymenoptera: Andrenidae). Journal of the Kansas Entomological Society 63(2): 260-266. http://www.jstor.org/stable/25085175

Blair BH (1935) The bees of the group Dieunomia. Journal of the New York Entomological Society 43(2): 201-214. https://www.jstor.org/stable/25004603

Bohart GE (1948) New North American bees of the genus Dufourea (Hymenoptera: Halictidae) Part II. Annals of the Entomological Society of America 41(1): 191-136. [Dufourea dilatipes Bohart, 1948] https://doi.org/10.1093/aesa/41.1.119

Bouseman JK, LaBerge WE (1979) A revision of the bees of the genus Andrena of the western hemisphere. Part IX. Subgenus Melandrena. Transactions of the American Entomological Society 104(3): 275-389. http://www.jstor.org/stable/25078228

Bridwell JC (1919) Miscellaneous notes on Hymenoptera. Proceedings of the Hawaiian Entomological Society 4: 109-165. http://hdl.handle.net/10125/15658

Brullé GA (1832) Expédition scientifique de Morée. Section des sciences physiques. Tome III. 1.re Partie. Zoologie. Deuxième section. Des animaux articulés. FG Levrault, Paris, 400 pp.

Buckell ER (1949) Record of bees from British Columbia (Andrenidae). Proceedings of the Entomological Society of British Columbia 45: 27-30.

Buck M, Paiero SM, Marshall SA (2005) New records of native and introduced Aculeate Hymenoptera from Ontario, with keys to Eastern Canadian species of Cerceris (Crabronidae) and eastern Nearctic species of Chelostoma (Megachilidae). Journal of the Entomological Society of Ontario 136: 37-52. [Chelostoma campanularum (Kirby, 1802), Chelostoma philadelphi (Robertson, 1891)] http://www.entsocont.ca/uploads/3/0/2/6/30266933/136_37_52.pdf

Cane JH, Eickwort GC, Wesley FR, Spielholz J (1983) Foraging, grooming and mate-seeking behaviors of Macropis nuda (Hymenoptera, Melittidae) and use of Lysimachia ciliata (Primulaceae) oils in larval provisions and cell linings. American Midland Naturalist 110(2): 257-264. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.2307/2425267

Cane JH, Eickwort GC, Wesley FR, Spielholz J (1985) Pollination ecology of Vaccinium stamineum (Ericaceae: Vaccinioideae). American Journal of Botany 72(1): 135-142. [Melitta (Cilissa) americana (Smith, 1853)] http://www.jstor.org/stable/2443575

CESCC (2016) Wild Species 2015: The General Status of Species in Canada. National General Status Working Group, Ottawa, 302 pp.

Cockerell TDA (1895) New bees of the genus Halictus from New Mexico, U.S.A. Annals and Magazine of Natural History, Series 6 16(91): 63-69. https://doi.org/10.1080/00222939508680230

Cockerell TDA (1896) The bees of the genus Andrena found in New Mexico. Annals and Magazine of Natural History, Series 6 18(103): 78-92. https://doi.org/10.1080/00222939608680413

Cockerell TDA (1896) New North American bees. The Entomologist's Monthly Magazine 32: 218-221.

Cockerell TDA (1896) Contributions from the New Mexico biological station—I. Descriptions of new bees collected by Prof. C.H.T. Townsend in the state of Vera Cruz. Annals and Magazine of Natural History, Series 6 18(106): 282-295. https://doi.org/10.1080/00222939608680457

Cockerell TDA (1897) New and little-known North American bees. Proceedings of the Academy of Natural Sciences of Philadelphia 49: 334-355. [Calliopsis australior Cockerell, 1897] http://www.jstor.org/stable/4062289

Cockerell TDA (1897) Contributions from the New Mexico biological station.—III.  The bees of the genus Colletes found in New Mexico. Annals and Magazine of Natural History, Series 6 19(109): 39-52. [Colletes aberrans Cockerell, 1897, Colletes gilensis Cockerell, 1897] https://doi.org/10.1080/00222939708680506

Cockerell TDA (1898) A southern type of Andrena in Connecticut. Entomological News 9: 171-72.

Cockerell TDA (1898) New bees from New Mexico. The Canadian Entomologist 30(6): 146-148. https://doi.org/10.4039/ent30146-6

Cockerell TDA (1898) Notes on some bees of the genus Andrena from Hartford, Connecticut. The Canadian Entomologist 30(4): 103-104. https://doi.org/10.4039/ent30103-4

Cockerell TDA (1898) On some panurgine and other bees. Transactions of the American Entomological Society 25: 185-198. [Panurginus atriceps (Cresson, 1878)] http://www.jstor.org/stable/25076687

Cockerell TDA (1898) New and little-known bees. The Canadian Entomologist 30(3): 50-53. https://doi.org/10.4039/ent3050-3

Cockerell TDA (1898) Panurginus clypeatus. The Canadian Entomologist 30 (2): 29. [Panurginus cressoniellus Cockerell, 1898] https://doi.org/10.4039/ent3029-2

Cockerell TDA (1900) Observations on bees collected at Las Vegas, New Mexico, and in the adjacent Mountains. Annals and Magazine of Natural History, Series 7 5(29): 401-416. https://doi.org/10.1080/00222930008678307

Cockerell TDA (1901) A new bee from California. Zeitschrift für Systematische Hymenopterologie und Dipterologie 1(2): 80.

Cockerell TDA (1901) A new Andrena from California. Entomological News 12: 74.

Cockerell TDA (1901) Some insects of the Hudsonian Zone in New Mexico—VI. Psyche 9(308): 282-287. [Andrena birtwelli Cockerell, 1901, Andrena (Andrena) washingtoni Cockerell, 1901] https://doi.org/10.1155/1901/483090

Cockerell TDA (1901) Some insects of the Hudsonian Zone in New Mexico—III. Psyche 9(298): 163-164. [Panurginus cressoniellus Cockerell, 1898] https://doi.org/10.1155/1901/34954

Cockerell TDA (1901) On some bees of the genus Andrena from New Jersey. Journal of the New York Entomological Society 9(3): 132-134. http://www.jstor.org/stable/25002948

Cockerell TDA (1902) Some Insects of the Hudsonian Zone in New Mexico—VIII. Psyche 9(313): 346-347. https://doi.org/10.1155/1902/58549

Cockerell TDA (1902) North-American bees of the genus Andrena. Annals and Magazine of Natural History, Series 7 9(50): 101-106. https://doi.org/10.1080/00222930208678552

Cockerell TDA (1902) New bees of the genus Andrena, from Wisconsin. The Canadian Entomologist 34(2): 45-47. https://doi.org/10.4039/ent3445-2

Cockerell TDA (1903) New bees from southern California and other records. Bulletin of the Southern California Academy of Sciences 2: 84-85.

Cockerell TDA (1903) North-American bees, and a new Homopteron. Annals and Magazine of Natural History, Series 7 12(70): 442-455. https://doi.org/10.1080/00222930308678879

Cockerell TDA (1904) New records of bees. The Entomologist 37: 231-236. [Panurginus beardsleyi (Cockerell, 1904), Sphecodes arroyanus Cockerell, 1904]

Cockerell TDA (1904) Records of American bees. The Canadian Entomologist 36(1): 13-14. https://doi.org/10.4039/ent3613-1

Cockerell TDA (1904) Descriptions and records of bees. Annals and Magazine of Natural History, Series 7 14(79): 21-30. [Heriades carinata Cresson, 1864] https://doi.org/10.1080/03745480409442962

Cockerell TDA (1905) New bees of the genera Osmia and Andrena. The Canadian Entomologist 37(11): 370-372. https://doi.org/10.4039/ent37370-11

Cockerell TDA (1905) The bees of southern California. Bulletin of the Southern California Academy of Sciences 4: 99-106. [Habropoda tristissima (Cockerell, 1904)]

Cockerell TDA (1905) The bees of southern California. VIII. Bulletin of the Southern California Academy of Sciences 4: 28-33.

Cockerell TDA (1906) New Rocky Mountain bees, and other notes. The Canadian Entomologist 38(5): 160-166. https://doi.org/10.4039/ent38160-5

Cockerell TDA (1906) The bees of Florissant, Colorado. Bulletin of the American Museum of Natural History 22: 419-455. [Andrena (Andrena) topazana Cockerell, 1906]

Cockerell TDA (1906) North American bees of the genera Andrena and Melitta in the British Museum.–I. Psyche 13: 5-10. [Melitta (Cilissa) americana (Smith, 1853)]

Cockerell TDA (1906) Descriptions and records of bees.—IX. Annals and Magazine of Natural History, Series 7 17(99): 306-317. https://doi.org/10.1080/00222930608562528

Cockerell TDA (1907) Descriptions and records of bees.—XIII. Annals and Magazine of Natural History, Series 7 19(113): 361-370. [Andrena (Andrena) milwaukeensis Graenicher, 1903] https://doi.org/10.1080/00222930708562656

Cockerell TDA (1907) Descriptions and records of bees.—XIV. Annals and Magazine of Natural History, Series 7 19(114): 531-540. [Andrena (Andrena) perarmata Cockerell, 1898] https://doi.org/10.1080/00222930709487287

Cockerell TDA (1907) The bees of Boulder County, Colorado. The University of Colorado Studies 4: 239-259.

Cockerell TDA (1907) Descriptions and records of bees.—XVI. Annals and Magazine of Natural History, Series 7 20(116): 122-132. [Andrena (Conandrena) bradleyi Viereck, 1907] https://doi.org/10.1080/00222930709487315

Cockerell TDA (1908) New American bees.—VI. The Entomologist 41: 59-61.

Cockerell TDA (1908) New American bees.—VII. The Entomologist 41: 292-294.

Cockerell TDA (1909) Descriptions and records of bees.—XXI. Annals and Magazine of Natural History, Series 8 4(19): 25-31. [Calliopsis coloradensis Cresson, 1878, Agapostemon sericeus (Forster, 1771)] https://doi.org/10.1080/00222930908692634

Cockerell TDA (1910) Some insects from Steamboat Springs, Colo.—II. The Canadian Entomologist 42(11): 366-370. https://doi.org/10.4039/ent42366-11

Cockerell TDA (1910) Descriptions and records of bees.—XXVI. Annals and Magazine of Natural History, Series 8 5(27): 256-264. https://doi.org/10.1080/00222931008692763

Cockerell TDA (1910) Descriptions and records of bees.—XXVII. Annals and Magazine of Natural History, Series 8 5(28): 361-369. [Nomada aldrichi Cockerell, 1910] https://doi.org/10.1080/00222931008692781

Cockerell TDA (1911) Some bees from western Canada. The Canadian Entomologist 43(1): 33-34. [Megachile dentitarsus Sladen, 1919] https://doi.org/http://dx.doi.org/10.4039/Ent4333-1

Cockerell TDA (1912) Descriptions and records of bees.—XLV. Annals and Magazine of Natural History, Series 8 10(55): 21-31. https://doi.org/10.1080/00222931208693193

Cockerell TDA (1913) Descriptions and records of bees.—LIV. Annals and Magazine of Natural History, Series 8 12(70): 368-376. https://doi.org/10.1080/00222931308693411

Cockerell TDA (1913) Two new Canadian bees. The Canadian Entomologist 45(1): 12-14. [Sphecodes confertus Say, 1837, Sphecodes hudsoni Cockerell, 1911] https://doi.org/10.4039/ent4512-1

Cockerell TDA (1915) Descriptions and records of bees.—LXV. Annals and Magazine of Natural History, Series 8 15(87): 261-269. [Andrena (Andrena) milwaukeensis Graenicher, 1903] https://doi.org/10.1080/00222931508693638

Cockerell TDA (1916) Two new bees from New Jersey. Bulletin of the Brooklyn Entomological Society 11: 11. https://biostor.org/reference/169777

Cockerell TDA (1916) New and little-known bees. The Entomologist 49: 156-160.

Cockerell TDA (1916) Some Rocky Mountain andrenid bees. The Canadian Entomologist 48(7): 252-254. https://doi.org/10.4039/ent48252-7

Cockerell TDA (1916) Some bees from Colorado. The Entomologist 49: 100-102.

Cockerell TDA (1916) Some bees in the British Museum. The Canadian Entomologist 48(8): 272-274. [Nomada aldrichi Cockerell, 1910] https://doi.org/10.4039/ent48272-8

Cockerell TDA (1916) New and little known bees from California. Pomona Journal of Entomology and Zoology 8(2): 43-64.

Cockerell TDA (1918) Some halictine bees. The Entomologist 51: 261-262.

Cockerell TDA (1918) Descriptions and records of bees.—LXXIX. Annals and Magazine of Natural History, Series 9 1(2): 158-167. https://doi.org/10.1080/00222931808562297

Cockerell TDA (1919) The bees of Peaceful Valley, Colorado. Journal of the New York Entomological Society 27(4): 298-300. http://www.jstor.org/stable/25003869

Cockerell TDA (1919) The bees of Gold Hill, Colorado. The Canadian Entomologist 51(12): 271-273. https://doi.org/10.4039/ent51271-12

Cockerell TDA (1922) Bees in the collection of the United States National Museum.—4. Proceedings of the United States National Museum 60: 1-20. [Sphecodes heraclei heraclei Robertson, 1897]

Cockerell TDA (1922) Descriptions and records of bees.—XCVI. Annals and Magazine of Natural History, Series 9 10(59): 544-550. https://doi.org/10.1080/00222932208632802

Cockerell TDA (1924) Bees of the genus Andrena in the collection of the California Academy of Sciences. The Pan-Pacific Entomologist 1(2): 57-65.

Cockerell TDA (1924) Expedition of the California Academy of Sciences to the Gulf of California in 1921. The bees (II). Proceedings of the California Academy of Sciences, Series 4 12(27): 529-560. [Agapostemon angelicus Cockerell, 1924, Megachile albitarsis Cresson, 1872, Megachile discorhina Cockerell, 1924] https://biostor.org/reference/77990

Cockerell TDA (1924) A bee collecting trip to Chimney Rock, Wyoming. Entomological News 35: 347-350.

Cockerell TDA (1926) Descriptions and records of bees.—CXIII. Annals and Magazine of Natural History, Series 9 18(108): 621-627. https://doi.org/10.1080/00222932608633558

Cockerell TDA (1927) Some North and South American bees. Annals of the Entomological Society of America 20(3): 393-400. https://doi.org/10.1093/aesa/20.3.393

Cockerell TDA (1927) Some bees, principally from Formosa and China. American Museum Novitates 274: 1-16.

Cockerell TDA (1928) A new bee of the genus Andrena visiting Senecio. Psyche 35: 62-63.

Cockerell TDA (1929) Some bees of the group Trachandrena, Robertson (Hymenoptera: Andrenidae). Annals of the Entomological Society of America 22(4): 754-758. https://doi.org/10.1093/aesa/22.4.754

Cockerell TDA (1929) New bees from the Mesa Verde National Park, Colorado. Journal of the New York Entomological Society 37(4): 441-448. http://www.jstor.org/stable/25004332

Cockerell TDA (1929) Descriptions and records of bees.—CXIX. Annals and Magazine of Natural History, Series 10 4(21): 296-304. https://doi.org/10.1080/00222932908673058

Cockerell TDA (1930) Descriptions and records of bees.—CXXI. Annals and Magazine of Natural History, Series 10 5(25): 108-115. https://doi.org/10.1080/00222933008673111

Cockerell TDA (1931) Some notes on bees of the genus Andrena. The Canadian Entomologist 63(1): 22-23. https://doi.org/10.4039/ent6322-1

Cockerell TDA (1931) Rocky Mountain bees. II. American Museum Novitates 458: 1-20.

Cockerell TDA (1931) A new bee of the genus Andrena from Canada. The Canadian Entomologist 63(9): 200-201. https://doi.org/10.4039/ent63200-9

Cockerell TDA (1932) Bees of the genus Andrena from California. The Pan-Pacific Entomologist 8(4): 173-177.

Cockerell TDA (1932) Two new bees of the genus Andrena from Canada. The Canadian Entomologist 64(7): 155-158. https://doi.org/10.4039/ent64155-7

Cockerell TDA (1932) A new Canadian Andrena (Hymenoptera, Apoidea). The Canadian Entomologist 64(12): 285-287. https://doi.org/10.4039/ent64285-12

Cockerell TDA (1933) Bees collected by Mrs. Maurice T. James in Pingree Park, Colorado. Annals of the Entomological Society of America 26(1): 40-44. https://doi.org/10.1093/aesa/26.1.40

Cockerell TDA (1934) New or little-known western bees. The Pan-Pacific Entomologist 9(4): 153-159.

Cockerell TDA (1934) Records of western bees. American Museum Novitates 697: 1-15.

Cockerell TDA (1936) Bees from Northern California. The Pan-Pacific Entomologist 12: 133-164.

Cockerell TDA (1936) The bees of Alberta.—I. The Canadian Entomologist 68(12): 274-277. https://doi.org/10.4039/ent68274-12

Cockerell TDA (1937) The bees of Alberta—IV. The Canadian Entomologist 69(5): 113-114. https://doi.org/10.4039/ent69113-5

Cockerell TDA (1937) Bees from San Miguel Island, California. The Pan-Pacific Entomologist 13(4): 148-157.

Cockerell TDA (1937) Bees of Alberta. V. The Canadian Entomologist 69(6): 126-127. https://doi.org/10.4039/Ent69126-6

Cockerell TDA (1937) The bees of Alberta.—III. The Canadian Entomologist 69(4): 86-89. https://doi.org/10.4039/ent6986-4

Cockerell TDA (1938) The bees of Alberta VI. The Canadian Entomologist 70(1): 5-7. https://doi.org/10.4039/Ent705-1

Cockerell TDA (1938) Bees from Prince Albert Park, Saskatchewan. American Museum Novitates 983: 1-4.

Cockerell TDA (1938) The bees of Alberta VII. The Canadian Entomologist 70(4): 70-71. https://doi.org/10.4039/Ent7070-4

Cockerell TDA (1939) The bees of the southern California Islands. Proceedings of the California Academy of Sciences, Series 4 23(28): 427-436.

Cockerell TDA (1939) A new Colletes (Hymenoptera, Apoidea) found on Santa Catalina Island. The Pan-Pacific Entomologist 15: 188-189.

Cockerell TDA (1941) Observations on plants and insects in north-western Baja California, Mexico, with descriptions of new bees. Transactions of the San Diego Society of Natural History 9(31): 339-352.

Cockerell TDA, Casad JE (1895) Descriptions of new Hymenoptera. Transactions of the American Entomological Society 22(3): 297-300. http://www.jstor.org/stable/25076646

Coelho BW (2004) A review of the bee genus Augochlorella (Hymenoptera: Halictidae: Augochlorini). Systematic Entomology 29(3): 282-323. https://doi.org/10.1111/j.0307-6970.2004.00243.x

Crawford J (1911) Descriptions of new Hymenoptera. No. 3. Proceedings of the United States National Museum 41: 267-282.

Crawford JC (1901) North American bees of the genus Agapostemon Guerin. Publications of the Nebraska Academy of Sciences 7: 156-165. [Agapostemon femoratus Crawford, 1901, Agapostemon fasciatus Crawford, 1901, Agapostemon obliquus (Provancher, 1888)]

Crawford JC (1902) The bee genus Dialictus. The Canadian Entomologist 34(12): 318. https://doi.org/10.4039/ent34318-12

Crawford JC (1902) Notes and descriptions of bees. The Canadian Entomologist 34(9): 234-240. https://doi.org/10.4039/ent34234-9

Crawford JC (1904) Two new Halictus from New Jersey. Entomological News 15: 97-99.

Crawford JC (1906) Some new species of Halictus. The Canadian Entomologist 38: 4-6. https://doi.org/http://dx.doi.org/10.4039/Ent384-1

Crawford JC (1907) New Halictinae from the Western United States. Invertebrata Pacifica 1: 190-197.

Crawford JC (1913) Notes on somes species of the genus Prosopis. The Canadian Entomologist 45(5): 154-156. https://doi.org/10.4039/ent45154-5

Crawford JC (1932) New North American bees. Proceedings of the Entomological Society of Washington 34: 69-78. [Panurginus ineptus Cockerell, 1922, Epeolus ainsliei Crawford, 1932, Lasioglossum (Dialictus) abanci (Crawford, 1932), Perdita ainsliei Crawford, 1932]

Cresson ET (1868) Descriptions of North American Bees.—No. 1. Proceedings of the Boston Society of Natural History 12: 165-171.

Cresson ET (1869) Descriptions of North American Bees.—No. 2. Proceedings of the Boston Society of Natural History 12: 269-274.

Cresson ET (1874) Descriptions of new Hymenoptera. Transactions of the American Entomological Society 5: 99-102.

Cresson ET (1875) Report upon the collections of Hymenoptera made in portions of Nevada, Utah, Colorado, New Mexico, and Arizona, during the years 1872, 1873, and 1874, with list of Formicidae by Edward Norton. Report upon Geographical and Geological Exploration and Surveys West of the One Hundredth Meridian 5: 707-736. [Melecta (Melecta) thoracica Cresson, 1875]

Cross EA (1958) A revision of the bees of the subgenus Epinomia in the new world. University of Kansas Science Bulletin 38: 1261-1301.

Dalla Torre CG (1896) Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Volume X: Apidae (Anthophila). Engelmann, Leipzig, 644 pp. [Melecta (Melecta) pacifica fulvida Cresson, 1879, Chelostoma rapunculi (Lepeletier, 1841)]

Danforth B, Eardley C, Packer L, Walker K, Pauly A, Randrianambinintsoa FJ (2008) Phylogeny of Halictidae with an emphasis on endemic African Halictinae. Apidologie 39(1): 86-101. https://doi.org/10.1051/apido:2008002

Danforth BN, Brady SG, Sipes SD, Pearson A (2004) Single-copy nuclear genes recover Cretaceous-age divergences in bees. Systematic Biology 53(2): 309-326. https://doi.org/10.1080/10635150490423737

Dathe HH (1994) Studien zur Systematik und Taxonomie der Gattung Hylaeus F. (Apidae, Colletinae). 1. Hylaeus annulatus (L.) eine holarktische, Hylaeus aborigensis sp. n. eine neue sibirische Art. Beiträge zur Entomologie 44(2): 441-445.

Dellicour S, Lecocq T, Kuhlmann M, Mardulyn P, Michez D (2014) Molecular phylogeny, biogeography, and host plant shifts in the bee genus Melitta (Hymenoptera: Anthophila). Molecular Phylogenetics and Evolution 70: 412-419. https://doi.org/10.1016/j.ympev.2013.08.013

Dumesh S, Sheffield CS (2012) Bees of the genus Dufourea Lepeletier (Hymenoptera: Halictidae: Rophitinae) of Canada. Canadian Journal of Arthropod Identification 20: 1-36. [Dufourea dilatipes Bohart, 1948] https://doi.org/10.3752/cjai.2012.20

Ebmer AW (1979) Ergänzungen zur Bienenfauna Iberiens. Die Gattunger Halictus, Lasioglossum und Dufourea (Apoidea, Hymenoptera). Linzer Biologische Beiträge 11: 117-146.

Ebmer AW (1996) Asiatische Halictidae, 5. Daten zur Aculeaten-Fauna der Ussuri-Region unter Berücksichtigung der angrenzenden Gebiete (Insecta: Hymenoptera: Apoidea: Halictidae: Halictinae). Linzer Biologische Beiträge 28: 261-304.

Eickwort GC (1969) Tribal positions of Western Hemisphere green sweat bees, with comments on their nest architecture (Hymenoptera: Halictidae). Annals of the Entomological Society of America 62(3): 652-660. https://doi.org/10.1093/aesa/62.3.652

Eickwort GC (1977) Aspects of the nesting biology and descriptions of immature stages of Perdita octomaculata and P. halictoides (Hymenoptera: Andrenidae). Journal of the Kansas Entomological Society 50(4): 577-599. http://www.jstor.org/stable/25082987

Eickwort GC (1981) Aspects of the nesting biology of five Nearctic species of Agapostemon (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 54(2): 337-351. [Agapostemon angelicus Cockerell, 1924] http://www.jstor.org/stable/25084166

Ellis MD (1913) Seven new North American bees of the genus Halictus (Hym.). Entomological News 24(5): 205-211.

Ellis MD (1914) New American bees of the genus Halictus (Hym.). Entomological News 25: 97-104.

Ellis MD (1914) New American bees of the genus Halictus (Hym.). Entomological News 25: 151-155.

Ellis MD (1914) New bees of the genus Halictus (Hym.) from United States, Guatemala and Ecuador. Journal of the New York Entomological Society 22(3): 218-223. http://www.jstor.org/stable/25003620

Ellis MD (1915) A new halictine bee form the Northern United States (Hym.). Entomological News 26: 291-294.

Elwell SL, Griswold T, Elle E (2016) Habitat type plays a greater role than livestock grazing in structuring shrubsteppe plant–pollinator communities. Journal of Insect Conservation 20(3): 515-525. [Lasioglossum (Dialictus) abundipunctum Gibbs, 2010] https://doi.org/10.1007/s10841-016-9884-8

Engel MS (2000) Classification of the bee tribe Augochlorini (Hymenoptera: Halictidae). Bulletin of the American Museum of Natural History 250: 1-89. https://doi.org/10.1206/0003-0090(2000)2502.0.co;2

Eversmann E (1852) Fauna Hymenopterologica Volgo-Uralensis. Bulletin de la Imperiale Society d'Naturalistes de Moscou 25(2): 3-137. [Chelostoma rapunculi (Lepeletier, 1841)]

Fabricius JC (1775) Systema Entomologiae, Sistens Insectorum Classes, Ordines, Genera, Species, Adiectis Synonymis, Locis, Descriptionibus, Observationibus. Officina Libraria Kortii, Flensburgi et Lipsiae, 832 pp.

Ford BA (1995) Status of the deerberry, Vaccinium stamineum L. (Ericaceae), in Canada. Rhodora 97(891): 255-263. http://www.jstor.org/stable/23313215

Förster A (1871) Monographie der Gattung Hylaeus F. (Latr.). Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien 21: 873-1084.

Forster JR (1771) Novæ Species Insectorum. Centuria I. Davies and White, London, 100 pp. [Agapostemon sericeus (Forster, 1771)]

Friese H (1917) Zur Bienenfauna von Costa Rica. (Hym.). Stettiner Entomologische Zeitung 77: 287-348.

Gibbs J (2009) New species in the Lasioglossum petrellum species group identified through an integrative taxonomic approach. The Canadian Entomologist 141(4): 371-396. https://doi.org/10.4039/n09-020

Gibbs J (2010) An aberrant bee of the species Lasioglossum (Dialictus) disparile (Cresson) (Hymenoptera: Halictidae) with brief taxonomic notes on the species. Journal of the Kansas Entomological Society 83(1): 92-96. http://www.jstor.org/stable/40783191

Gibbs J (2010) Revision of the metallic species of Lasioglossum (Dialictus) in Canada (Hymenoptera, Halictidae, Halictini). Zootaxa 2591: 1-382. [Lasioglossum (Dialictus) abundipunctum Gibbs, 2010, Lasioglossum (Dialictus) achilleae (Mitchell, 1960), Lasioglossum (Dialictus) admirandum (Sandhouse, 1924), Lasioglossum (Dialictus) sablense Gibbs, 2010, Lasioglossum (Dialictus) abanci (Crawford, 1932)] https://doi.org/10.11646/zootaxa.2591.1.1

Gibbs J (2011) Revision of the metallic Lasioglossum (Dialictus) of eastern North America (Hymenoptera: Halictidae: Halictini). Zootaxa 3073: 1-216. [Lasioglossum (Dialictus) achilleae (Mitchell, 1960), Lasioglossum (Dialictus) admirandum (Sandhouse, 1924), Lasioglossum (Dialictus) abanci (Crawford, 1932), Lasioglossum (Dialictus) ascheri Gibbs, 2011] https://doi.org/10.11646/zootaxa.3073.1.1

Gibbs J (2012) Two replacement names for North American Lasioglossum (Dialictus) (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 85(3): 259-261. http://www.jstor.org/stable/23355956

Gibbs J, Albert J, Packer L (2011) Dual origins of social parasitism in North American Dialictus (Hymenoptera: Halictidae) confirmed using a phylogenetic approach. Cladistics 28(2): 195-207. https://doi.org/10.1111/j.1096-0031.2011.00373.x

Gibbs J, Dumesh S, Griswold TL (2014) Bees of the genera Dufourea and Dieunomia of Michigan (Hymenoptera: Apoidea: Halictidae), with a key to the Dufourea of the eastern United States. Journal of Melittology 29: 1-15. https://doi.org/http://dx.doi.org/10.17161/jom.v0i29.4652

Gibbs J, Brady S, Kanda K, Danforth B (2012) Phylogeny of halictine bees supports a shared origin of eusociality for Halictus and Lasioglossum (Apoidea: Anthophila: Halictidae). Molecular Phylogenetics and Evolution 65(3): 926-939. https://doi.org/10.1016/j.ympev.2012.08.013

Gibson A, Criddle N (1920) The entomological record. Annual Report of the Entomological Society of Ontario 1919: 112-134. [Colletes compactus hesperius Swenk, 1906]

Graenicher S (1903) New bees of the genus Andrena. The Canadian Entomologist 35(6): 162-166. [Andrena (Andrena) frigida Smith, 1853, Andrena (Andrena) milwaukeensis Graenicher, 1903] https://doi.org/10.4039/ent35162-6

Graenicher S (1911) Bees of northwestern Wisconsin. Bulletin of the Public Museum of Milwaukee 1: 221-249. [Nomada aquilarum Cockerell, 1903, Nomada fervida Smith, 1854]

Graenicher S (1935) Bee-fauna and vegetation of Wisconsin. Annals of the Entomological Society of America 28(2): 285-310. [Anthophora (Mystacanthophora) walshii Cresson, 1869] https://doi.org/10.1093/aesa/28.2.285

Grixti J, Packer L (2006) Changes in the bee fauna (Hymenoptera: Apoidea) of an old field site in southern Ontario, revisited after 34 years. The Canadian Entomologist 138(2): 147-164. https://doi.org/10.4039/n05-034

Heron J, Sheffield CS (2015) First record of the Lasioglossum (Dialictus) petrellum species group in Canada (Hymenoptera: Halictidae). Journal of the Entomological Society of British Columbia 112: 88-91. http://journal.entsocbc.ca/index.php/journal/article/view/903

Horn ME (2010) A comparison of pollinator biodiversity between green spaces, industrial areas and residential land-use zones in urban, southern Ontario. University of Guelph, Guelph, 83 pp.

Hurd PD (1979) Superfamily Apoidea. In: Krombein KV, Hurd Jr PD, Smith DR, Burks BD (Eds) Catalog of Hymenoptera in America North of Mexico. Smithsonian Institution Press, Washington, 2735 pp. [Andrena placata Mitchell, 1960, Panurginus cressoniellus Cockerell, 1898, Habropoda murihirta (Cockerell, 1905), Nomada aquilarum Cockerell, 1903, Colletes aberrans Cockerell, 1897, Colletes compactus hesperius Swenk, 1906, Agapostemon femoratus Crawford, 1901, Sphecodes confertus Say, 1837, Macropis (Macropis) nuda (Provancher, 1882), Melitta (Cilissa) americana (Smith, 1853)]

Hurd PD (1970) A new, narrowly polylectic, autumnal species of Dialictus from the flowers of Jepsonia heterandra, an endemic California saxifrage. The Pan-Pacific Entomologist 46: 209-212.

Janjic J, Packer L (2003) Phylogeny of the bee genus Agapostemon (Hymenoptera: Halictidae). Systematic Entomology 28(1): 101-124. [Agapostemon obliquus (Provancher, 1888)] https://doi.org/10.1046/j.1365-3113.2003.00204.x

Johnson MD (1981) Observations on the biology of Andrena (Melandrena) dunningi Cockerell (Hymenoptera: Andrenidae). Journal of the Kansas Entomological Society 54(1): 32-40. http://www.jstor.org/stable/25084129

Kirby W (1802) Monographia Apum Angliae; or, an attempt to divide into their natural genera and families, such species of the Linnean genus Apis as have been discovered in England: with descriptions and observations. 2. J. Raw, Ipswich, 388 pp. [Chelostoma campanularum (Kirby, 1802)]

Kirby W (1837) Fauna Boreali-Americana. Part the Fourth and Last. The Insects. Norwich, London, 325 pp.

Knerer G, Atwood CE (1962) An annotated check list of the non-parasitic Halictidae (Hymenoptera) of Ontario. Proceedings of the Entomological Society of Ontario 92: 160-176. [Agapostemon sericeus (Forster, 1771), Lasioglossum (Dialictus) admirandum (Sandhouse, 1924)]

Knerer G, Atwood CE (1964) An annotated check list of the genus Andrena in Ontario (Hymenoptera: Andrenidae). Proceedings of the Entomological Society of Ontario 95: 41-56.

Knerer G, Atwood CE (1964) Description of the male of Dialictus novascotiae Mitchell and of the female of D. sandhouseae (Michener) (Hymenoptera, Halictidae). Entomological News 75: 5-8.

Knerer G, Atwood CE (1966) Additional descriptions in the genus Dialictus Robertson (Hymenoptera: Halictidae). The Canadian Entomologist 98(8): 881-887. [Lasioglossum (Dialictus) admirandum (Sandhouse, 1924)] http://dx.doi.org/10.4039/Ent98881-8

Knerer G, Atwood CE (1966) Polymorphism in some Nearctic halictine bees. Science 152(3726): 1262-1263. https://doi.org/10.1126/science.152.3726.1262

Knerer G, Atwood CE (1966c) Nest architecture as an aid in halictine taxonomy (Hymenoptera: Halictidae). The Canadian Entomologist 98(12): 1337-1339. https://doi.org/10.4039/ent981337-12

Krombein KV (1958) Hymenoptera of America North of Mexico Synoptic Catalog (Agriculture Monograph No. 2). First supplement . United States Government Printing Office, Washington, 305 pp. [Melecta (Melecta) pacifica fulvida Cresson, 1879]

Kuhlmann M, Ascher JS (2010) Two new synonymies of eastern North American Colletes Latr. species described from Japan (Hymenoptera: Colletidae). Entomological News 121: 325-328. http://dx.doi.org/10.3157/021.121.0404

Kuhlmann M, Almeida E, Laurenne N, Quicke D (2009) Molecular phylogeny and historical biogeography of the bee genus Colletes Latreille, 1802 (Hymenoptera: Apiformes: Colletidae), based on mitochondrial COI and nuclear 28S sequence data. Insect Systematics & Evolution 40 (3): 291-318. https://doi.org/10.1163/139956009x12475840653733

LaBerge WE (1967) A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae). Bulletin of the University Nebraska State Museum 7: 1-318. [Andrena (Callandrena) accepta Viereck, 1916, Andrena aliciae Robertson, 1891, Andrena placata Mitchell, 1960]

LaBerge WE (1969) A revision of the bees of the genus Andrena of the Western Hemisphere. Part II. Plastandrena, Aporandrena, Charitandrena. Transactions of the American Entomological Society 95(1): 1-47. http://www.jstor.org/stable/25077972

LaBerge WE (1971) A revision of the bees of the genus Andrena of the Western Hemisphere. Part IV. Scrapteropsis, Xiphandrena and Rhaphandrena. Transactions of the American Entomological Society 97(3): 441-520. http://www.jstor.org/stable/25078019

LaBerge WE (1973) A revision of the bees of the genus Andrena of the Western Hemisphere. Part VI. Subgenus Trachandrena. Transactions of the American Entomological Society 99(3): 235-371. http://www.jstor.org/stable/25078133

LaBerge WE (1977) A revision of the bees of the genus Andrena of the Western Hemisphere. Part VIII. Subgenera Thysandrena, Dasyandrena, Psammandrena, Rhacandrena, Euandrena, Oxyandrena. Transactions of the American Entomological Society 103(1): 1-143. http://www.jstor.org/stable/25078201

LaBerge WE (1980) A revision of the bees of the genus Andrena of the Western Hemisphere. Part X. Subgenus Andrena. Transactions of the American Entomological Society 106(4): 395-525. [Andrena aculeata LaBerge, 1980, Andrena birtwelli Cockerell, 1901, Andrena (Andrena) carolina Viereck, 1909, Andrena (Andrena) ceanothifloris cretata LaBerge, 1980, Andrena (Andrena) edwardsi Viereck, 1916, Andrena (Andrena) frigida Smith, 1853, Andrena (Andrena) fulgida LaBerge, 1980, Andrena (Andrena) hemileuca Viereck, 1904, Andrena (Andrena) laminibucca Viereck and Cockerell, 1914, Andrena (Andrena) macoupinensis Robertson, 1900, Andrena (Andrena) mandibularis Robertson, 1892, Andrena (Andrena) milwaukeensis Graenicher, 1903, Andrena (Andrena) perarmata Cockerell, 1898, Andrena (Andrena) saccata Viereck, 1904, Andrena (Andrena) schuhi LaBerge, 1980, Andrena (Andrena) topazana Cockerell, 1906, Andrena (Andrena) washingtoni Cockerell, 1901] http://www.jstor.org/stable/25078273

LaBerge WE (1985) A revision of the bees of the genus Andrena of the Western Hemisphere. Part XI. Minor subgenera and subgeneric key. Transactions of the American Entomological Society 111(4): 441-567. [Andrena (Andrena) carolina Viereck, 1909] http://www.jstor.org/stable/25078376

LaBerge WE (1986) A revision of the bees of the genus Andrena of the Western Hemisphere. Part XII. Subgenera Leucandrena, Ptilandrena, Scoliandrena and Melandrena. Transactions of the American Entomological Society 112(3): 191-248. http://www.jstor.org/stable/25078392

LaBerge WE (1989) A revision of the bees of the genus Andrena of the Western Hemisphere. Part XIII. Subgenera Simandrena and Taeniandrena. Transactions of the American Entomological Society 115(1): 1-56. http://www.jstor.org/stable/25078446

LaBerge WE, Bouseman JK (1970) A revision of the bees of the genus Andrena of the Western Hemisphere. Part III. Tylandrena. Transactions of the American Entomological Society 96(4): 543-605. http://www.jstor.org/stable/25078004

LaBerge WE, Ribble DW (1972) A revision of the bees of the genus Andrena of the Western Hemisphere. Part V. Gonandrena, Geissandrena, Parandrena, Pelicandrena. Transactions of the American Entomological Society 98(3): 271-358. http://www.jstor.org/stable/25078115

LaBerge WE, Ribble DW (1975) A revision of the bees of the genus Andrena of the Western Hemisphere. Part VII. Subgenus Euandrena. Transactions of the American Entomological Society 101(3): 371-446. http://www.jstor.org/stable/25078177

Lanham UN (1941) Bees of the genus Andrena of Boulder, Colorado. Annals of the Entomological Society of America 34(4): 702-713. https://doi.org/10.1093/aesa/34.4.702

Lanham UN (1949) A subgeneric classification of the new world bees of the genus Andrena. University of California Publications in Entomology 8(5): 183-238.

Larkin L, Neff J, Simpson B (2006) Phylogeny of the Callandrena subgenus of Andrena (Hymenoptera: Andrenidae) based on mitochondrial and nuclear DNA data: polyphyly and convergent evolution. Molecular Phylogenetics and Evolution 38(2): 330-343. https://doi.org/10.1016/j.ympev.2005.10.003

Lepeletier ALM (1841) Histoire Naturelle des Insectes - Hyménoptères. 2. Roret, Paris, 680 pp. [Chelostoma rapunculi (Lepeletier, 1841)]

Linnaeus C (1758) Systema naturae per regna tria naturae secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. 10. Holmia, Stockholm, 823 pp.

Linsley EG (1938) Studies in the Andrenidae of North America–I (Hymenoptera). Proceedings of the California Academy of Sciences 23: 263-282. [Andrena (Andrena) ceanothifloris cretata LaBerge, 1980]

Linsley EG (1939) New species of andrenid bees from California (Hymenoptera). The Pan-Pacific Entomologist 15(4): 155-162. [Andrena (Andrena) frigida Smith, 1853]

Linsley EG (1951) Superfamily Apoidea. In: Muesebeck CFW, Krombein KV, Townes HK (Eds) Hymenoptera of America north of Mexico Synoptic Catalog. United States Department of Agriculture Agricultural Monograph 2, Washington, 1420 pp. [Andrena birtwelli Cockerell, 1901, Andrena (Conandrena) bradleyi Viereck, 1907, Melecta (Melecta) pacifica fulvida Cresson, 1879]

Lovell JH (1905) Four new species of Halictus from Maine. The Canadian Entomologist 37(2): 39-40. https://doi.org/10.4039/ent3739-2

Lovell JH (1905) Some Maine species of Halictus. The Canadian Entomologist 37(8): 299-300. https://doi.org/10.4039/ent37299-8

Lovell JH (1907) The Colletidae of southern Maine. The Canadian Entomologist 39: 363-365.

Lovell JH (1908) The Halictidae of Southern Maine. Psyche 15: 32-42.

Lovell JH, Cockerell TD (1907) The Sphecodidae of southern Maine. Psyche 14(5): 101-110. [Sphecodes clematidis Robertson, 1897, Sphecodes confertus Say, 1837, Sphecodes davisii Robertson, 1897, Sphecodes galerus Lovell and Cockerell, 1907] https://doi.org/10.1155/1907/12128

Malloch JR (1917) Three new species of the new genus Andrena from the United States (Hymenoptera, Aculeata). Bulletin of the Brooklyn Entomological Society 12(4): 89-92.

Metz CW (1911) A revison of the genus Prosopis in North America. Transactions of the American Entomological Society 37(2): 85-156. http://www.jstor.org/stable/25076884

Michener CD (1936) Some bees of the genus Halictus. Annals and Magazine of Natural History, Series 10 18(104): 281-289. https://doi.org/10.1080/00222933608655192

Michener CD (1937) Records and descriptions of North American bees. Annals and Magazine of Natural History, Series 10 19(111): 313-329. https://doi.org/10.1080/00222933708655269

Michener CD (1938) A review of the American bees of the genus Macropis (Hymen., Apoidea). Psyche 45(2): 133-135. [Macropis (Macropis) ciliata Patton, 1880]

Michener CD (1951) Superfamily Apoidea. In: Muesebeck CF, Krombein KV, Townes HK (Eds) Hymenoptera of America north of Mexico Synoptic Catalog. 2. United States Department of Agriculture Agricultural Monograph, Washington, 1420 pp. [Habropoda cineraria (Smith, 1879), Colletes compactus hesperius Swenk, 1906, Agapostemon femoratus Crawford, 1901, Melitta (Cilissa) americana (Smith, 1853), Colletes aestivalis Patton, 1879, Agapostemon obliquus (Provancher, 1888)]

Michener CD (1978) The parasitic groups of Halictidae. University of Kansas Science Bulletin 51: 291-339. [Sphecodes atlantis Mitchell, 1956, Sphecodes autumnalis Mitchell, 1956]

Michener CD (1981) Classification of the bee family Melittidae with a review of species of Maganomiinae. American Entomological Institute 18 (3): 1-135.

Michener CD, Brothers DJ, Kamm DR (1971) Interactions in colonies of primitively social bees: artificial colonies of Lasioglossum zephyrum. Proceedings of the National Academy of Sciences 68(6): 1241-1245. https://doi.org/10.1073/pnas.68.6.1241

Michez D, Eardley C (2007) Monographic revision of the bee genus Melitta Kirby 1802 (Hymenoptera: Apoidea: Melittidae). Annales de la Société entomologique de France (N.S.) 43(4): 379-440. https://doi.org/10.1080/00379271.2007.10697535

Michez D, Patiny S (2005) World revision of the oil-collecting bee genus Macropis Panzer 1809 (Hymenoptera: Apoidea: Melittidae) with a description of a new species from Laos. Annales de la Société entomologique de France (n.s.) 41(1): 15-28. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.1080/00379271.2005.10697439

Michez D, Patiny S, Danforth B (2009) Phylogeny of the bee family Melittidae (Hymenoptera: Anthophila) based on combined molecular and morphological data. Systematic Entomology 34(3): 574-597. https://doi.org/10.1111/j.1365-3113.2009.00479.x

Michez D, Patiny S, Rasmont P, Timmermann K, Vereecken N (2008) Phylogeny and host-plant evolution in Melittidae s.l. (Hymenoptera: Apoidea). Apidologie 39(1): 146-162. https://doi.org/10.1051/apido:2007048

Miliczky E (2008) Observations on the nesting biology of Andrena (Plastandrena) prunorum Cockerell in Washington State (Hymenoptera: Andrenidae). Journal of the Kansas Entomological Society 81(2): 110-121. https://doi.org/10.2317/jkes-611.12.1

Miliczky ER (1988) Observations on the bionomics of the bee Andrena (Tylandrena) erythrogaster Ashmead (Hymenoptera: Andrenidae) with notes on A. (Micrandrena) personata Robertson and A. (Holandrena) c. cressonii Robertson. Illinois Natural History Survey, Biological Notes 130: 1-18.

Miliczky ER, Osgood EA (1995) Bionomics of Andrena (Melandrena) vicina Smith in Maine and Washington, with new parasite records for A. (M.) regularis Malloch and a review of Melandrena biology. Journal of the Kansas Entomological Society 68(1): 51-66. http://www.jstor.org/stable/25085560

Mitchell TB (1951) Some new species of bees from the eastern United States. Journal of the Elisha Mitchell Scientific Society 67: 231-249.

Mitchell TB (1956) New species of Sphecodes from the eastern United States. Journal of the Elisha Mitchell Scientific Society 72: 206-222. [Sphecodes atlantis Mitchell, 1956, Sphecodes autumnalis Mitchell, 1956, Sphecodes clematidis Robertson, 1897, Sphecodes coronus Mitchell, 1956, Sphecodes fattigi Mitchell, 1956] http://dc.lib.unc.edu/cdm/ref/collection/jncas/id/2232

Mitchell TB (1960) Bees of the Eastern United States. Volume 1. North Carolina Agricultural Experiment Station Technical Bulletin 141: 1-538. [Andrena (Andrena) frigida Smith, 1853, Andrena placata Mitchell, 1960, Perdita halictoides Smith, 1853, Lasioglossum (Dialictus) achilleae (Mitchell, 1960), Sphecodes aroniae Mitchell, 1960, Sphecodes atlantis Mitchell, 1956, Sphecodes autumnalis Mitchell, 1956, Sphecodes clematidis Robertson, 1897, Sphecodes confertus Say, 1837, Sphecodes coronus Mitchell, 1956, Sphecodes davisii Robertson, 1897, Sphecodes galerus Lovell and Cockerell, 1907, Sphecodes heraclei heraclei Robertson, 1897, Sphecodes johnsonii Lovell, 1909, Macropis (Macropis) nuda (Provancher, 1882), Melitta (Cilissa) americana (Smith, 1853), Macropis (Macropis) patellata Patton, 1880, Sphecodes banksii Lovell, 1909, Sphecodes fattigi Mitchell, 1956]

Mitchell TB (1962) Bees of the Eastern United States. Volume 2. North Carolina Agricultural Experimental Station Technical Bulletin 152, Raleigh, 557 pp. [Epeolus americanus (Cresson, 1878), Brachymelecta californica (Cresson, 1878), Megachile xylocopoides Smith, 1853]

Mocsáry A (1877) Hymenoptera mellifera nova in collectione musaei nationalis hungarici. Természetrajzt Füzetek 1: 231-233.

Moisan-De Serres J (2013) Influence du paysage de bleuetières sur les communautés de pollinisateurs indigènes du Lac-St-Jean et évaluation du potentiel de pollinisation des pollinisateurs du bleuet nain. Université Laval, Québec City, 112 pp.

Morawitz F (1871) Beitrag zur Bienenfauna Russlands. Horae Societatis Entomologicae Rossicae 7(4): 321-333.

Morice FD, Cockerell TDA (1901) The American bees of the genus Andrena described by F. Smith. The Canadian Entomologist 33(5): 149-155. https://doi.org/10.4039/ent33149-5

Mueller UG (1996) Life history and social evolution of the primitively eusocial bee Augochlorella striata (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 69(4): 116-138. http://www.jstor.org/stable/25085710

Neff JL, Simpson BB (1997) Nesting and foraging behavior of Andrena (Callandrena) rudbeckiae Robertson (Hymenoptera: Apoidea: Andrenidae) in Texas. Journal of the Kansas Entomological Society 70(2): 100-113. http://www.jstor.org/stable/25085761

Normandin É, Vereecken NJ, Buddle CM, Fournier V (2017) Taxonomic and functional trait diversity of wild bees in different urban settings. PeerJ 5: e3051. [Sphecodes coronus Mitchell, 1956, Chelostoma campanularum (Kirby, 1802), Chelostoma philadelphi (Robertson, 1891), Lasioglossum (Dialictus) abanci (Crawford, 1932)] https://doi.org/10.7717/peerj.3051

Noskiewicz J (1936) Die paläarktischen Colletes-Arten. Prace Naukowe Wydawnictwo Towarzystwa Naukowego we Lwowie 3: 1-531.

Nye WP (1980) Notes on the biology of Halictus (Halictus) farinosus Smith (Hymenoptera: Halictidae). . USDA ARR-W-11/May 1980.. USDA-ARR, Logan, 29 pp.

Nylander W (1852) Supplementum adnotationum in expositionem apum borealium. Notiser ur Sällskapets pro Fauna et Flora Fennica Förhandlingar 2: 93-107.

Onuferko T, Kutby R, Richards M (2015) A list of bee species (Hymenoptera: Apoidea) recorded from three municipalities in the Niagara region of Ontario, including a new record of Lasioglossum furunculum Gibbs (Halictidae) in Canada. Journal of the Entomological Society of Ontario 146: 3-22. [Sphecodes atlantis Mitchell, 1956, Sphecodes heraclei heraclei Robertson, 1897] http://www.entsocont.ca/uploads/3/0/2/6/30266933/v_146_onuferko_et_al_2015.pdf

Ordway E (1964) Sphecodes pimpinellae and other enemies of Augochlorella (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 37(2): 139-152. http://www.jstor.org/stable/25083373

Ordway E (1966) The bionomics of Augochlorella striata and A. persimilis in eastern Kansas (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 39(2): 270-313. http://www.jstor.org/stable/25083518

Ordway E (1966) Systematics of the genus Augochlorella (Hymenoptera, Halictidae) north of Mexico. University of Kansas Science Bulletin 46: 509'624.

Ostaff DP, Ascher JS, Javorek S, Mosseler A (2015) New records of Andrena (Hymenoptera: Andrenidae) in New Brunswick, Canada. Journal of the Acadian Entomological Society 11: 5-8. http://acadianes.org/journal/papers/ostaff_15-1.pdf

Packer L (1990) Solitary and eusocial nests in a population of Augochlorella striata (Provancher) (Hymenoptera; Halictidae) at the northern edge of its range. Behavioral Ecology and Sociobiology 27(5): 339-344. https://doi.org/10.1007/bf00164004

Packer L, Jessome V, Lockerbie C, Sampson B (1989) The phenology and social biology of four sweat bees in a marginal environment: Cape Breton Island. Canadian Journal of Zoology 67(12): 2871-2877. https://doi.org/10.1139/z89-407

Parker FD, Bohart GE (1982) Notes on the biology of Andrena (Callandrena) helianthi Robertson (Hymenoptera: Andrenidae). Pan-Pacific Entomologist 58 (2): 111'116.

Parker FD, Griswold T (1982) Biological notes on Andrena (Callandrena) haynesi Viereck and Cockerell (Hymenoptera: Andrenidae). Pan-Pacific Entomologist 58 (4): 284'287.

Patton WH (1879) Synopsis of the New England species of Colletes. Proceedings of the Boston Society of Natural History 20: 142'144. [Colletes aestivalis Patton, 1879]

Patton WH (1880a) Descriptions of the species of Macropis. Entomologists Monthly Magazine 17: 31'35. [Macropis (Macropis) patellata Patton, 1880]

Patton WH (1880b) Two new bees of the genus Sphecodes. The American Entomologist 3: 230. [Sphecodes confertus Say, 1837]

Payette A (2013) First record of the bee Melitta americana (Smith) (Hymenoptera: Melittidae) for Québec and Canada. The Canadian Field-Naturalist 127(1): 60-63. [Megachile addenda Cresson, 1878, Melitta (Cilissa) americana (Smith, 1853)]

PCA (2010) Recovery strategy for Deerberry (Vaccinium stamineum) in Canada. Species at Risk Act Recovery Strategy Series. Parks Canada Agency, Ottawa, 15 pp. [ISBN 978-1-100-17293-4]

Pekkarinen A, Berg O, Calabuig I, Janzon LA, Luig J (2003) Distribution and co-existence of the Macropis species and their cleptoparasite Epeoloides coecutiens (Fabr.) in NW Europe (Hymenoptera: Apoidea, Melittidae and Apidae). Entomologica Fennica 14 (1): 53'59.

Pérez J (1902) Espèces nouvelles de mellifères paléarctiques. Procès-verbaux de la Société Linnéenne de Bordeaux 57: 174'179.

Pérez J (1903) Espéces nouvelles de Melliféres. Actes de la Société linnéenne de Bordeaux 58: 208'236.

Perkins RCL (1922) Halictus tumulorum L. and flavipes F. and some allied species. Entomologist’s Monthly Magazine 58: 24'26.

Pesenko YA (1984) The bees of the genus Halictus Latreille sensu stricto (Hymenoptera, Halictidae) of Mongolia and north-western China, with a review of publications on Halictini of this region with a revision of the subgenus Prohalictus of the world fauna. Insects of Mongolia 9: 446'481.

Pierce WD (1918) The comparative morphology of the order Strepsiptera together with records and descriptions of insects. Proceedings of the United States National Museum 54(2242): 391-501. http://dx.doi.org/10.5479/si.00963801.54-2242.391

Preyssler JD, Lindacker JT, Hofer JK (1793) Beobachtungen über Gegenstände der Natur auf einer Reise durch den Böhmerwald im Sommer1791. In: Mayer J (Ed.) Sammlung physikalischer Aufsätze, besonders dieBöhmische Naturgeschichte betreffend, von einer Gesellschaft BöhmischerNaturforscher. III. Dresden, 408 pp.

Provancher L (1882) Faune Canadienne. Les Insectes Hyménoptères. Naturaliste canadien 13: 168-175. [Macropis (Macropis) nuda (Provancher, 1882)]

Provancher L (1882b) Faune Canadienne. Les Insectes Hyménoptères. Naturaliste canadien 13: 259'269. [In French].

Provancher L (1882c) Faune Canadienne. Les Insectes Hyménoptères. Naturaliste canadien 13: 193'209. [In French].

Provancher L (1882d) Faune Canadienne. Les Insectes Hyménoptères. Naturaliste canadien 13: 225'242. [In French].

Provancher L (1882e) Faune Canadienne. Les Insectes Hyménoptères. Naturaliste canadien 13: 257'259. [In French].

Provancher L (1895) Les dernières descriptions de l’abbé Provancher, Ordre des Hyménoptères. Fam. XXI–Andrenidae. Naturaliste canadien 22: 189'191.

Rau P (1935) Notes on the nesting habits of the red-bellied bee, Andrena erythrogaster Ash. (Hymen.: Andrenidae). Entomological News 45: 35'37.

Richards MH, Rutgers-Kelly A, Gibbs J, Vickruck JL, Rehan SM, Sheffield CS (2011) Bee diversity in naturalizing patches of Carolinian grasslands in southern Ontario, Canada. The Canadian Entomologist 143 (3): 279'299. [Sphecodes heraclei heraclei Robertson, 1897] https://doi.org/10.4039/n11-010

Richards OW (1935) Notes on the nomenclature of the aculeate Hymenoptera, with species referecne to British genera and species. Transactions of the Royal Entomological Society of London 83 (1): 143'176. https://doi.org/10.1111/j.1365-2311.1935.tb00420.x

Robertson C (1890) New North American bees of the genera Halictus and Prosopis. Transactions of the American Entomological Society 17(4): 315-318. http://www.jstor.org/stable/25076547

Robertson C (1891) Descriptions of new species of North American bees. Transactions of the American Entomological Society 18(1): 49-66. [Andrena (Callandrena) accepta Viereck, 1916, Andrena aliciae Robertson, 1891, Holcopasites illinoiensis (Robertson, 1891), Colletes latitarsis Robertson, 1891, Chelostoma philadelphi (Robertson, 1891), Colletes aestivalis Patton, 1879] http://www.jstor.org/stable/25076556

Robertson C (1892) Descriptions of new North American bees. American Naturalist 26: 267'274. [Andrena (Andrena) mandibularis Robertson, 1892]

Robertson C (1893) Notes on bees, with descriptions of new species. Transactions of the American Entomological Society 20 (2): 145-149. [Agapostemon sericeus (Forster, 1771)] http://www.jstor.org/stable/25076604

Robertson C (1893) Notes on bees, with descriptions of new species. Transactions of the American Entomological Society 20(4): 273-276. http://www.jstor.org/stable/25076609

Robertson C (1895) Notes on bees, with descriptions of new species. Transactions of the American Entomological Society 22 (2): 115-128. [Andrena (Callandrena) accepta Viereck, 1916, Andrena aliciae Robertson, 1891, Colletes aestivalis Patton, 1879] http://www.jstor.org/stable/25076640

Robertson C (1897) North American bees−descriptions and synonyms. Transactions of the Academy of Sciences of St. Louis 7: 315-356. [Agapostemon sericeus (Forster, 1771), Sphecodes clematidis Robertson, 1897, Sphecodes confertus Say, 1837, Sphecodes heraclei heraclei Robertson, 1897, Macropis (Macropis) nuda (Provancher, 1882)]

Robertson C (1898) New or little known North American bees. Transactions of the Academy of Sciences of St. Louis 8: 43-54.

Robertson C (1899) Flowers and insects. XIX. Botanical Gazette 28(1): 27-45. http://www.jstor.org/stable/2465148

Robertson C (1900) Some Illinois bees. Transactions of the Academy of Science of St. Louis 10: 47-55. [Andrena (Andrena) macoupinensis Robertson, 1900]

Robertson C (1901) Some new or little-known bees. The Canadian Entomologist 33: 229-231.

Robertson C (1902) Synopsis of Halictinae. The Canadian Entomologist 34: 243-250.

Robertson C (1902b) Synopsis of Andreninae. Transactions of the American Entomological Society 28(2): 187-194. [Andrena (Andrena) mandibularis Robertson, 1892] http://www.jstor.org/stable/25076736

Robertson C (1903) Synopsis of Sphecodinae. Entomological News 14(4): 103-107. [Sphecodes confertus Say, 1837, Sphecodes heraclei heraclei Robertson, 1897]

Robertson C (1904) Synopsis of Prosopis and Colletes, with supplementary notes and descriptions. The Canadian Entomologist 36(9): 273-278. https://doi.org/10.4039/ent36273-9

Robertson C (1925) Heterotropic bees. Ecology 6(4): 412-436. https://doi.org/10.2307/1929107

Robertson C (1926) Phenology of inquiline and nest-making bees. Psyche 33: 116-120. [Anthophora (Mystacanthophora) walshii Cresson, 1869, Holcopasites illinoiensis (Robertson, 1891)]

Roberts RB (1973) Bees of Northwestern America: Halictus (Hymenoptera: Halictidae). Technical Bulletin of the Agricultural Experiment Station, Oregon State University 126: 1-23. http://hdl.handle.net/1957/8698

Roberts RB (1973) Bees of Northwestern America: Agapostemon (Hymenoptera: Halictidae). Technical Bulletin of the Agricultural Experiment Station, Oregon State University 125: 1-23. [Agapostemon angelicus Cockerell, 1924, Agapostemon femoratus Crawford, 1901, Agapostemon fasciatus Crawford, 1901] http://hdl.handle.net/1957/8697

Roig-Alsina A (2006) Hylaeus punctatus (Brulle (Colletidae), a palaearctic bee long established in south America. Journal of Hymenoptera Research 15 (2): 286'289.

Romankova T (2003) Bees of the genus Colletes of Ontario (Hymenoptera, Apoidea, Colletidae). Journal of the Entomological Society of Ontario 134: 91-106. [Colletes aberrans Cockerell, 1897, Colletes latitarsis Robertson, 1891, Colletes aestivalis Patton, 1879] http://www.entsocont.ca/uploads/3/0/2/6/30266933/134_91_106.pdf

Rozen JG (1973) Biology notes on the bee Andrena accepta Viereck (Hymenoptera, Andrenidae). Journal of the New York Entomological Society 81(1): 54-61. [Andrena (Callandrena) accepta Viereck, 1916] http://www.jstor.org/stable/25008852

Rozen Jr JG, Favreau MS (1968) Biological notes on Colletes compactus compactus and its cuckoo bee, Epeolus pusillus (Hymenoptera: Colletidae and Anthophoridae). Journal of the New York Entomological Society 76 (2): 106'111. http://www.jstor.org/stable/25006105

Rozen Jr JG, Jacobson NR (1980) Biology and immature stages of Macropis nuda, including comparisons to related bees (Apoidea, Melittidae). American Museum Novitates 2702: 1'11. [Macropis (Macropis) nuda (Provancher, 1882)]

Rozen JG, McGinley RJ (1974) Phylogeny and systematics of Melittidae based on the mature larvae (Insecta, Hymenoptera, Apoidea). American Museum Novitates 2545: 1-31.

Sandhouse GA (1923) The bee-genus Dialictus. The Canadian Entomologist 55(8): 193-195. https://doi.org/http://dx.doi.org/10.4039/Ent55193-8

Sandhouse GA (1924) New North American species of bees belonging to the genus Halictus (Chloralictus). Proceedings of the United States National Museum 65: 1-43. [Lasioglossum (Dialictus) admirandum (Sandhouse, 1924), Lasioglossum (Dialictus) absimile (Sandhouse, 1924)]

Sandhouse GA (1936) The bees of the genus Agapostemon (Hymenoptera: Apoidea occurring in the United States. Journal of the Washington Academy of Sciences 26: 70-83. [Agapostemon femoratus Crawford, 1901, Agapostemon fasciatus Crawford, 1901, Agapostemon sericeus (Forster, 1771)]

Sandhouse GA (1941) The American bees of the subgenus Halictus. Entomologica Americana 21(1): 23-38.

Say T (1824) [Appendix. Part I.-Natural history. Zoology]. In: Keating WH (Ed.) Narrative of an Expedition to the Source of the St. Peter’s River, Lake Winnepeek, Lake of the Woods, &c. Performed in the Year 1823, by order of the Hon. J.C. Calhoun, Secretary of War, Under the Command of Stephen H. Long, U.S.T.E. 2. H.C Carey & I. Lea, Philadelphia, 459 pp.

Say T (1837) Descriptions of new species of North American Hymenoptera, and observations on some already described. Boston Journal of Natural History 1: 361-416. [Agapostemon sericeus (Forster, 1771), Sphecodes confertus Say, 1837, Anthophora abrupta Say, 1837]

Schenck A (1875) Aus der Bienen-Fauna Nassau's. Berliner entomologische Zeitschrift 19 (2): 321'332. https://doi.org/10.1002/mmnd.18750190207

Schrader MN, LaBerge WE (1978) The nest biology of the bees Andrena (Melandrena) regularis Malloch and Andrena (Melandrena) carlini Cockerell (Hymenoptera: Andrenidae). Illinois Natural History Survey, Biological Notes 108: 3'24.

Sheffield C, Perron J (2014) Annotated catalogue of the bees described by Léon Provancher (Hymenoptera: Apoidea). The Canadian Entomologist 146 (2): 117-169. [Sphecodes coronus Mitchell, 1956, Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882), Megachile albitarsis Cresson, 1872] https://doi.org/10.4039/tce.2013.64

Sheffield C, Rigby S, Smith R, Kevan P (2004) The rare cleptoparasitic bee Epeoloides pilosula (Hymenoptera: Apoidea: Apidae) discovered in Nova Scotia, Canada, with distributional notes. Journal of the Kansas Entomological Society 77 (3): 161'164. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.2317/0310.23.1

Sheffield CS, Frier SD, Dumesh D (2014) The bees (Hymenoptera: Apoidea, Apiformes) of the Prairies Ecozone, with comparisons to other grasslands of Canada. In: Giberson DJ, Cárcamo HA (Eds) Arthropods of Canadian Grasslands (Volume 4): Biodiversity and Systematics Part 2. 4. Biological Survey of Canada, Ottawa, 479 pp. [ISBN 978-0-9689321-7-9]. [Andrena (Callandrena) accepta Viereck, 1916, Calliopsis chlorops Cockerell, 1899, Calliopsis coloradensis Cresson, 1878, Calliopsis barri (Rozen, 1959), Panurginus beardsleyi (Cockerell, 1904), Panurginus ineptus Cockerell, 1922, Anthophora (Mystacanthophora) walshii Cresson, 1869, Epeolus ainsliei Crawford, 1932, Habropoda cineraria (Smith, 1879), Holcopasites pulchellus (Cresson, 1878), Holcopasites stevensi Crawford, 1915, Nomada snowii Cresson, 1878, Brachymelecta californica (Cresson, 1878), Colletes aberrans Cockerell, 1897, Agapostemon femoratus Crawford, 1901, Agapostemon sericeus (Forster, 1771), Dufourea dilatipes Bohart, 1948, Lasioglossum (Dialictus) admirandum (Sandhouse, 1924), Sphecodes arroyanus Cockerell, 1904, Sphecodes clematidis Robertson, 1897, Macropis (Macropis) nuda (Provancher, 1882), Agapostemon obliquus (Provancher, 1888)] https://doi.org/http://dx.doi.org/10.3752/9780968932179.ch11

Sheffield CS, Hebert PD, Kevan PG, Packer L (2009) DNA barcoding a regional bee (Hymenoptera: Apoidea) fauna and its potential for ecological studies. Molecular Ecology Resources 9: 196'207. [Sphecodes coronus Mitchell, 1956, Sphecodes galerus Lovell and Cockerell, 1907] https://doi.org/10.1111/j.1755-0998.2009.02645.x

Sheffield CS, Kevan PG, Smith RF, Rigby SM, Rogers RE (2003) Bee species of Nova Scotia, Canada, with new records and notes on bionomics and floral relations (Hymenoptera: Apoidea). Journal of the Kansas Entomological Society 76 (2): 357'384. [Andrena (Andrena) carolina Viereck, 1909, Lasioglossum (Dialictus) admirandum (Sandhouse, 1924)] http://www.jstor.org/stable/25086122

Smith F (1853) Catalogue of Hymenopterous Insects in the Collection of the British Museum. British Museum, London, 198 pp. [Andrena (Andrena) frigida Smith, 1853, Perdita halictoides Smith, 1853, Agapostemon sericeus (Forster, 1771), Melitta (Cilissa) americana (Smith, 1853), Sphecodes hudsoni Cockerell, 1911, Anthophora abrupta Say, 1837, Megachile xylocopoides Smith, 1853]

Smith F (1865) Descriptions of some new species of hymenopterous insects belonging to the families Thynnidae, Masaridae and Apidae. Transactions of the Entomological Society of London, Series 3 2: 389'399.

Smith F (1879) Descriptions of New Species of Hymenoptera in the Collection of the British Museum. Taylor and Francis, London, 240 pp. [Andrena (Andrena) frigida Smith, 1853, Habropoda cineraria (Smith, 1879), Anthophora bomboides solitaria Ritsema, 1880]

Snelling RR (1966) Studies of North American bees of the genus Hylaeus 1. Distribution of the western species of the subgenus Prosopis with descriptions of new forms (Hymenopera: Colletidae). Los Angeles County Museum Contributions in Science 98: 1'18.

Snelling RR (1968) Studies on North American bees of the genus Hylaeus. 4. The subgenera Cephalylaeus, Metziella and Hylaeana (Hymenoptera: Colletidae) . Los Angeles County Museum Contributions in Science 144: 1'6.

Snelling RR (1970) Studies on North American bees of the genus Hylaeus. 5. The subgenera Hylaeus, s. str. and Paraprosopis (Hymenoptera: Colletidae). Los Angeles County Museum Contributions in Science 180: 1'59.

Snelling RR (1975) Taxonomic notes on some colletid bees of western North America with descriptions of new species (Hymenoptera: Colletidae). Natural History Museum of Los Angeles County Contributions in Science 267: 1'9.

Snelling RR (1983) Studies on North American bees of the genus Hylaeus. 6. An adventive Palearctic species in southern California (Hymenoptera: Colletidae). Bulletin of the Southern California Academy of Sciences 82: 12'16.

Snelling RR, Stage GI (1995) A revision of the Nearctic Melittidae: the subfamily Melittinae (Hymenoptera: Apoidea). Los Angeles County Museum Contributions in Science 451: 19-31. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882), Melitta (Cilissa) americana (Smith, 1853), Macropis (Macropis) patellata Patton, 1880]

Stephen WP (1952) A new name for Colletes albescens Nosk. (Hymenoptera: Apoidea). The Canadian Entomologist 84(11): 355. https://doi.org/10.4039/ent84355-11

Stephen WP (1954) A revision of the bee genus Colletes in America north of Mexico (Hymenoptera Colletidae). University of Kansas Science Bulletin 36: 149-527. [Colletes aberrans Cockerell, 1897, Colletes compactus hesperius Swenk, 1906, Colletes latitarsis Robertson, 1891, Colletes aestivalis Patton, 1879, Colletes gilensis Cockerell, 1897]

Stevens OA (1919) The panurgine bees of North Dakota and a new Epeolus (Hym.). The Canadian Entomologist 51(8): 205-210. [Panurginus beardsleyi (Cockerell, 1904)] https://doi.org/10.4039/ent51205-8

Strand E (1909) Die paläarktischen Prosopis-Arten des Kgl. Zoologischen Museums zu Berlin, Entomologische Rundschau 26: 72-78.

Swenk MH (1904) A new Colletes. Entomological News 15: 251-253.

Swenk MH (1904) Colletidae, Colletes, Latr. In Viereck et al. The Canadian Entomologist 36: 94-97.

Swenk MH (1905) New species of Colletes. The Canadian Entomologist 37: 301-304.

Swenk MH (1906) New bees of the genus Colletes. The Canadian Entomologist 38: 39-44.

Swenk MH (1906) New bees of the genus Colletes. Entomological News 17: 257-260. [Colletes compactus hesperius Swenk, 1906]

Swenk MH (1907) The bees of Nebraska.—III. Entomological News 18: 293-300. [Holcopasites calliopsidis calliopsidis (Linsley, 1943), Macropis (Macropis) nuda (Provancher, 1882)]

Swenk MH (1908) Specific characters in the bee genus Colletes. Papers from the University Studies Series, The University of Nebraska 8: 1-60. [Colletes compactus hesperius Swenk, 1906, Colletes latitarsis Robertson, 1891, Colletes gilensis Cockerell, 1897]

Swenk MH (1925) Two new bees of the genus Colletes, oligotropic upon Petalostemum. American Museum Novitates 186: 1-9.

Swenk MH, Cockerell TDA (1907) The bees of Nebraska.–II. Entomological News 18: 178-187. [Panurginus beardsleyi (Cockerell, 1904)]

Tadauchi O, Hirashima Y (1987) Descriptions of two new species and one unrecorded female of the genus Andrena from Japan (Hymenoptera, Andrenidae). Esakia 25: 133-139.

Tadauchi O, Xu H, Paik J (1997) The family Andrenidae of Korea (Hymenoptera, Apoidea) II. Esakia 37: 187-202.

Taraday BC (1982) The effect of the cleptoparasitic bee Nomada maculata (Hymenoptera: Anthophoridae) on the biology of its host Andrena vicina (Hymenoptera: Andrenidae) . Cornell University, Ithaca, 101 pp.

Timberlake PH (1943) Bees of the genus Colletes chiefly from Colorado. Bulletin of the American Museum of Natural History 81: 385-410.

Timberlake PH (1951) New and little-known bees of the family Andrenidae from California. Proceedings of The United States National Museum 101(3281): 373-414. https://doi.org/http://dx.doi.org/10.5479/si.00963801.3281.373

Timberlake PH (1951) Western bees of the genus Colletes (Hymenoptera: Apoidea). Wasmann Journal of Biology 9: 181-238.

Titus ES (1900) Notes on Colorado bees. The Canadian Entomologist 32(10): 303-305. https://doi.org/10.4039/Ent32303-10

Titus ES (1901) On some bees of the genus Augochlora. The Canadian Entomologist 33(5): 133-137. https://doi.org/10.4039/ent33133-5

Torchio PF, Burdick DJ (1988) Comparative notes on the biology and development of Epeolus compactus Cresson, a cleptoparasite of Colletes kincaidii Cockerell (Hymenoptera: Anthophoridae, Colletidae). Annals of the Entomological Society of America 81(4): 626-636.

Torchio PF, Trostle GE, Burdick DJ (1988) The nesting biology of Colletes kincaidii Cockerell (Hymenoptera: Colletidae) and development of its immature forms. Annals of the Entomological Society of America 81(4): 605-625.

Vachal J (1903) Étude sur les Halictus d’Amérique. Miscellanea Entomologica 11: 121-136.

Vachal J (1904) Halictus nouveaux ou présumés nouveaux d’Amérique (Hymenoptera). Bulletin de la Société Scientifique, Historique et Archéologique dela Corrèze 26: 469-486.

Viereck HL (1902) Hymenoptera from southern California and New Mexico, with descriptions of new species. Proceedings of the Academy of Natural Sciences of Philadelphia 54: 728-743. https://www.jstor.org/stable/4062724

Viereck HL (1907) Andrenae of the Canadian, Alleghanian and Carolinian plant zones occurring or likely to occur in Connecticut. Entomological News 18: 280-288. [Andrena (Conandrena) bradleyi Viereck, 1907]

Viereck HL (1908) Preoccupied names of Pan-American Andrena (Hymenoptera). Entomological News 19: 42.

Viereck HL (1909) Descriptions of new Hymenoptera. Proceedings of the Entomological Society of Washington 11: 42-51. [Melitta (Cilissa) americana (Smith, 1853)] https://biostor.org/reference/68897

Viereck HL (1909) A new species of Andrena. Entomological News 20: 126. [Andrena (Andrena) carolina Viereck, 1909]

Viereck HL (1909) Descriptions of new Hymenoptera. Entomological News 20: 290-292.

Viereck HL (1916) New species of North American bees of the genus Andrena from west of the 100th meridian contained in the collections of the Academy of Natural Sciences of Philadelphia. Proceedings of the Academy of Natural Sciences of Philadelphia 68: 550-608. [Andrena (Andrena) hemileuca Viereck, 1904]

Viereck HL (1916) New species of the bee genus Andrena in the American Museum of Natural History. Bulletin of the American Museum of Natural History 35: 729-732. [Andrena (Andrena) edwardsi Viereck, 1916]

Viereck HL (1916) Preoccupied names in the genus Andrena (Hymenoptera). Proceedings of the Biological Society of Washington 29: 127. [Andrena (Callandrena) accepta Viereck, 1916]

Viereck HL (1917) New species of North American bees of the genus Andrena contained in the collections ofthe Academy of Natural Sciences of Philadelphia. Transactions of the American Entomological Society 43(4): 365-407. [Andrena (Andrena) macoupinensis Robertson, 1900, Andrena (Andrena) topazana Cockerell, 1906] http://www.jstor.org/stable/25076978

Viereck HL (1922) New bees of the genus Andrena. Occasional Papers of the Boston Society of Natural History 5: 35-45.

Viereck HL (1924) Descriptions of two Canadian bees of the genus Melecta. The Canadian Entomologist 56(1): 15. [Brachymelecta californica (Cresson, 1878), Zacosmia maculata maculata (Cresson, 1879)] https://doi.org/10.4039/ent5615-1

Viereck HL (1924) The identity of Conohalictoides noveangliae Robertson. Proceedings of the Entomological Society of Washington 26(1): 14-15.

Viereck HL, Cockerell TD (1914) New North American bees of the genus Andrena. Proceedings of the United States National Museum 48: 1-58. [Andrena birtwelli Cockerell, 1901, Andrena (Andrena) frigida Smith, 1853, Andrena (Andrena) laminibucca Viereck and Cockerell, 1914, Andrena (Andrena) macoupinensis Robertson, 1900, Andrena (Andrena) perarmata Cockerell, 1898]

Wagner D, Ascher J (2008) Rediscovery of Epeoloides pilosula (Cresson) (Hymenoptera: Apidae) in New England. Journal of the Kansas Entomological Society 81(2): 81-83. https://doi.org/10.2317/jkes-703.19.1

Walckenaer CA (1817) Mémoires pour servir a l'histoire naturelle des abeilles solitaires qui composent le genre halicte. Didot, Paris, 95 pp.

Warncke K (1967) Beitrag zur Klärung paläarktischer Andrena-Arten (Hym. Apidae). Eos 43: 171-318.

Warncke K (1970) Die unter dem Gattungsnamen Apis beschriebenen Andrenae (Apoidea Hymenoptera) und Fixierung von Lectotypen weiterer von Fabricius beschriebener Andrena-Arten. Nachrichtenblatt der Bayerischen Entomologen 19: 28-32.

Warncke K (1970) Beitrag zur Systematik und Verbreitung der Bienengattung Prosopis F. in der Westpaläarktis (Hymenoptera, Apoidea, Colletidae). Bulletin des Recherches Agronomiques de Gembloux 5: 745-768.

Warncke K (1973) Zur Systematik und Synonymie der mitteleuropäischen Furchenbienen Halictus Latreille. Bulletin de la Société Royale des Sciences de Liège 42: 277-295.

Wcislo WT (1993) Communal nesting in a North American pearly-banded bee, Nomia tetrazonata, with notes on nesting behavior of Dieunomia heteropoda (Hymenoptera: Halictidae: Nomiinae). Annals of the entomological Society of America 86(6): 813-821.

Wcislo WT, Buchmann SL (1995) Mating behaviour in the bees, Dieunomia heteropoda and Nomia tetrazonata, with a review of courtship in Nomiinae (Hymenoptera: Halictidae). Journal of Natural History 29(4): 1015-1027. https://doi.org/10.1080/00222939500770391

Wilson JS, Wilson LE, Loftis LD, Griswold T (2010) The montane bee fauna of north central Washington, USA, with floral associations. Western North American Naturalist 70(2): 198-207.

Woodcock T, Pekkola L, Dawson C, Gadallah F, Kevan P (2014) Development of a Pollination Service Measurement (PSM) method using potted plant phytometry. Environmental Monitoring and Assessment 186(8): 5041-5057. [Sphecodes johnsonii Lovell, 1909] https://doi.org/10.1007/s10661-014-3758-x

Wray JC, Elle E (2016) Pollen preferences of two species of Andrena in British Columbia’s oaksavannah ecosystem. Journal of the Entomological Society of British Columbia 113: 39-48. http://journal.entsocbc.ca/index.php/journal/article/view/935

Xu H, Tadauchi O (2009) A revision of the subgenus Leucandrena of the genus Andrena of eastern Asia (Hymenoptera: Apoidea: Andrenidae). Zootaxa 2145: 26-46.

Yasumatsu K (1939) Three new or unrecorded Apoidea from Saghalien (Hymenoptera). Insecta Matsumurana 13: 66-70. http://hdl.handle.net/2115/9407

Zetterstedt JW (1838) Insecta Lapponica. L. Voss, Leipzig, 1140 pp. [Chelostoma rapunculi (Lepeletier, 1841), Andrena (Andrena) lapponica Zetterstedt, 1838]

Cockerell TDA (1927) Bees of the genera Agapostemon and Augochlora in the collection of the California Academy of Sciences. The Pan-Pacific Entomologist 3(4): 153-162. [Agapostemon angelicus Cockerell, 1924, Agapostemon femoratus Crawford, 1901] https://biostor.org/reference/224519

Roberts RB (1972) Revision of the bee genus Agapostemon. University of Kansas Science Bulletin 49: 437-590. [Agapostemon angelicus Cockerell, 1924, Agapostemon femoratus Crawford, 1901, Agapostemon fasciatus Crawford, 1901] https://biostor.org/reference/145357

Vachal J (1903) Étude sur les Halictus d’Amerique (Hym.). Miscellanea Entomologica 11: 89-104. [Agapostemon fasciatus Crawford, 1901]

Gardner J, Gibbs J (2020) The ‘red-tailed’ Lasioglossum (Dialictus) (Hymenoptera: Halictidae) of the western Nearctic. European Journal of Taxonomy 725: 1-242. https://doi.org/10.5852/ejt.2020.725.1167

Gibbs J, Hanuschuk EJ, Shukla-Bergen S (2021) Rediscovery of the rare bee Epeoloides pilosulus in Manitoba (Hymenoptera: Apidae). Journal of the Kansas Entomological Society 93(2): 176-182. [Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.2317/0022-8567-93.2.176

Ashmead WH (1898) Some new genera of bees. Psyche 8(271): 282-285. https://doi.org/10.1155/1898/70320

Ashmead WH (1899) Classification of the bees, or the superfamily Apoidea. Transactions of the American Entomological Society 26(1): 49-100. https://www.jstor.org/stable/25076694

Baker CF (1896) On the affinities of Neolarra. Proceedings of the Entomological Society of Washington 4(1): 20-24.

Baker CF (1906) American bees related to Melecta. Invertebrata Pacifica. 1: 142-145.

Baker JR (1972) The biology and systematics of certain Nearctic groups of Coelioxys (Hymenoptera: Megachilidae). Ph.D. Thesis, University of Kansas. 270 pp.

Baker JR (1975) Taxonomy of five Nearctic subgenera of Coelioxys (Hymenoptera: Megachilidae). The University of Kansas Science Bulletin 50(12): 649-730.

Bequaert J (1920) Hymenoptera collected near Boston, Mass., with description of a variety of Bombus affinis. Psyche 27(1): 6-12. https://doi.org/10.1155/1920/45767

Bequaert J, Plath OE (1925) Descriptions of a new Psithyrus, with an account of Psithyrus laboriosus, and notes on bumblebees. Bulletin of the Museum of Comparative Zoology at Harvard College 67: 265-288.

Bossert S, Wood TJ, Patiny S, Michez D, Almeida EAB, Minckley RL, Packer L, Neff JL, Copeland RS, Straka J, Pauly A, Griswold T, Brady SG, Danforth BN, Murray EA (2021) Phylogeny, biogeography and diversification of the mining bee family Andrenidae. Systematic Entomology 47(2): 283-302. https://doi.org/10.1111/syen.12530

Brodie W, White JE (1883) Label list of insects of the Dominion of Canada. Natural History Society of Toronto. C. Blackett Robinson, Toronto. [Epeolus americanus (Cresson, 1878), Anthophora abrupta Say, 1837]

Bromley SW (1917) Asilids and their prey. Psyche 21: 192-198.

Bruner L (1903) Some notes on the bee genus Andrena. Transactions of the American Entomological Society 29(3): 239-258. http://www.jstor.org/stable/25076762

Cameron P (1898) Hymenoptera Orientalia, or contributions to a knowledge of the Hymenoptera of the Oriental zoological region, Part VII. Memoirs and Proceedings of the Manchester Literary & Philosophical Society 42(11): 1-84.

Christ JL (1791) Naturgeschichte, Klassification und Nomenclatur der Insekten vom Bienen, Wespen und Ameisengeschlecht. Frankfurt, Main, Herrmann, 535 pp. [Chelostoma campanularum (Kirby, 1802)]

Cockerell TDA (1916) Some California bees. The Canadian Entomologist 48(11): 391-393. [Zacosmia maculata maculata (Cresson, 1879)] https://doi.org/10.4039/Ent48391-11

Dötterl S, Schäffler I (2006) Flower scent of floral oil-producing Lysimachia punctata as attractant for the oil-bee Macropis fulvipes. Journal of Chemical Ecology 33(2): 441-445. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.1007/s10886-006-9237-2

Patton WH (1880) Descriptions of the species of Macropis. Entomologists Monthly Magazine 17: 31-35. [Macropis (Macropis) ciliata Patton, 1880]

Popov VB (1958) Peculiar features of correlated evolution of two genera of bees—Macropis and Epeoloides (Hymenoptera, Apoidea) — and a plant genus Lysimachia (Primulaceae). Entomological Review 37: 499-519. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882)]

Sheffield C, Heron J (2018) A new western Canadian record of Epeoloides pilosulus (Cresson), with discussion of ecological associations, distribution, and conservation status in Canada. Biodiversity Data Journal 6: e22837. [Macropis (Macropis) ciliata Patton, 1880, Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.3897/BDJ.6.e22837

Gardner J, Gibbs J (2021) New and little-known Canadian Lasioglossum (Dialictus) (Hymenoptera: Halictidae) and an emended key to species. The Canadian Entomologist 154(1), E3. [Lasioglossum (Dialictus) onuferkoi Gardner and Gibbs, 2021, Lasioglossum (Dialictus) absimile (Sandhouse, 1924), Lasioglossum (Dialictus) ascheri Gibbs, 2011] https://doi.org/10.4039/tce.2021.47

Hicks CH (1934) Some reared insect parasites and their hosts. University of Colorado Studies. 21: 265-271. [Zacosmia maculata maculata (Cresson, 1879)]

Cockerell TDA (1916) Descriptions and records of bees.—LXXI. Annals and Magazine of Natural History, Series 8 17(100): 277-287. [Neolarra (Neolarra) pruinosa Ashmead, 1890, Dioxys pomonae pomonae Cockerell, 1910] https://doi.org/10.1080/00222931608693784

Cockerell TDA, Adkins E (1902) Contributions from the New Mexico biological station—XII. On some genera of bees. Annals and Magazine of Natural History, Series 7 9(51): 230-234. [Neolarra (Neolarra) pruinosa Ashmead, 1890] https://doi.org/10.1080/00222930208678574

Cockerell TDA (1929) Some Californian parasitic bees. The Pan-Pacific Entomologist 5(3): 101-105. [Neolarra (Neolarra) pruinosa Ashmead, 1890]

Michener CD (1939) A revision of the genus Neolarra (Hymenoptera: Nomadidae). Transactions of the American Entomological Society 65(4): 347-362. [Neolarra (Neolarra) pruinosa Ashmead, 1890, Neolarra (Phileremulus) vigilans (Cockerell, 1895)] https://www.jstor.org/stable/25077445

Shanks SS (1978[1977]) A revision of the cleptoparasitic bee genus Neolarra (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 35(2): 212-246. [Neolarra (Neolarra) pruinosa Ashmead, 1890, Neolarra (Phileremulus) vigilans (Cockerell, 1895), Neolarra (Phileremulus) mallochi (Crawford, 1912)]

Crawford JC (1912) Notes on some Canadian bees. The Canadian Entomologist 44(12): 359-360. [Calliopsis coloradensis Cresson, 1878, Holcopasites stevensi Crawford, 1915, Neolarra (Phileremulus) mallochi (Crawford, 1912)] https://doi.org/10.4039/Ent44359-12

Gibbs J, Hanuschuk E, Miller R, Dubois M, Martini M, Robinson S, Nakagawa P, Sheffield CS, Onuferko T (2023) A checklist of the bees (Hymenoptera: Apoidea) of Manitoba, Canada. The Canadian Entomologist 155: E3. [Andrena placata Mitchell, 1960, Anthophora (Mystacanthophora) walshii Cresson, 1869, Holcopasites stevensi Crawford, 1915, Neolarra (Phileremulus) vigilans (Cockerell, 1895), Brachymelecta californica (Cresson, 1878), Agapostemon sericeus (Forster, 1771), Lasioglossum (Dialictus) admirandum (Sandhouse, 1924), Sphecodes atlantis Mitchell, 1956, Sphecodes coronus Mitchell, 1956, Sphecodes galerus Lovell and Cockerell, 1907, Sphecodes johnsonii Lovell, 1909, Macropis (Macropis) nuda (Provancher, 1882), Calliopsis australior Cockerell, 1897, Lasioglossum (Dialictus) absimile (Sandhouse, 1924), Neolarra (Phileremulus) mallochi (Crawford, 1912), Sphecodes banksii Lovell, 1909] https://doi.org/10.4039/tce.2022.45

Cockerell TDA (1895) New species of bees. Psyche 7(supplement): 9-11. [Neolarra (Phileremulus) vigilans (Cockerell, 1895)] https://doi.org/10.1155/1895/45305

Clement SL, Rust RW (1975) The biology of Hoplitis robusta (Hymenoptera: Megachilidae). Entomological News 86(5/6): 115-120. https://www.biodiversitylibrary.org/part/57234

Tkalcu B (1995) Die Bienen der Tribus Osmiini der Mongolei (Insecta: Hymenoptera: Apoidea: Megachilidae). Entomologische Abhandlungen 57: 109-147.

Sladen FWL (1916) Bees of Canada - Fam. Megachilidae. The Canadian Entomologist 48: 269–272. [Formicapis, Formicapis clypeata] http://dx.doi.org/10.4039/Ent48269-8

Timberlake PH (1941) Ten new species of Stelis from California (Hymenoptera, Apoidea). Journal of the New York Entomological Society 49(2): 123-137. [Stelis ashmeadiellae Timberlake, 1941] http://www.jstor.org/stable/25004909

Bossert S, Copeland RS, Sless TJL, Branstetter MG, Gillung JP, Brady SG, Danforth BN, Policarová J, Straka J (2020) Phylogenomic and morphological reevaluation of the bee tribes Biastini, Neolarrini, and Townsendiellini (Hymenoptera: Apidae) with description of three new species of Schwarzia. Insect Systematics and Diversity 4(6): 1-29. [Biastes (Neopasites) fulviventris (Cresson, 1878), Biastes (Neopasites) cressoni (Crawford, 1916)] https://doi.org/10.1093/isd/ixaa013

Crawford JC (1916) Some new American Hymenoptera. Insecutor Inscitiae Menstruus 4: 135-144. [Biastes (Neopasites) cressoni (Crawford, 1916)]

Linsley EG (1943) A revision of the genus Gnathopasites (Hymenoptera: Nomadidae). Transactions of the American Entomological Society 69(4): 141-149. [Biastes (Neopasites) fulviventris (Cresson, 1878), Biastes (Neopasites) cressoni (Crawford, 1916)] https://www.jstor.org/stable/25077511

Linsley EG, Michener CD (1939) A generic revision of the North American Nomadidae (Hymenoptera). Transactions of the American Entomological Society. 65(3): 265-305. [Biastes (Neopasites) cressoni (Crawford, 1916)] http://www.jstor.org/stable/25077441

Warncke K (1982) Zur Systematik der Bienen - Die Unterfamilie Nomadinae (Hymenoptera, Apidae). Entomofauna 3(8): 97-126. [Biastes (Neopasites) cressoni (Crawford, 1916)]

Michener CD (1944) Comparative external morphology, phylogeny and a classification of the bees (Hymenoptera). Bulletin of the American Museum of Natural History 82(6): 151-326. [Biastes (Neopasites) cressoni (Crawford, 1916)]

Cockerell TDA (1910) Some new American bees. The Canadian Entomologist 42(5): 169-171. [Dioxys pomonae pomonae Cockerell, 1910] https://doi.org/10.4039/Ent42169-5

Cockerell TDA (1911) New and little known bees. Transactions of the American Entomological Society 37(3): 217-241. [Sphecodes arroyanus Cockerell, 1904, Dioxys pomonae pomonae Cockerell, 1910] https://www.jstor.org/stable/25076889

Cockerell TDA (1938) Descriptions and Records of Bees.—CLXIX. Annals and Magazine of Natural History, Series 11 2(8): 146-154. [Dioxys pomonae pomonae Cockerell, 1910] https://doi.org/10.1080/03745481.1938.9755447

Hurd PD (1958) American bees of the genus Dioxys Lepeletier and Serville (Hymenoptera: Megachilidae). University of California Publications in Entomology 14: 275-302. [Dioxys pomonae pomonae Cockerell, 1910]

Jaycox ER (1966) Observations of Dioxys productus productus (Cresson) as a parasite of Anthidium utahense Swenk (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist 42: 18-20. [Dioxys pomonae pomonae Cockerell, 1910]

Newberry M (1900) Notes on the nesting of Anthidium paroselae Ckll. Psyche 9: 94. [Dioxys pomonae pomonae Cockerell, 1910]

Rozen JG (1967) The immature instars of the cleptoparasitic genus Dioxys (Hymenoptera: Megachilidae). Journal of the New York Entomological Society 75(4): 236-248. [Dioxys pomonae pomonae Cockerell, 1910]

Rozen JG, Favreau MS (1967) Biological notes on Dioxys pomonae pomonae and on its host, Osmia nigrobarbata (Hymenoptera: Megachilidae). Journal of the New York Entomological Society 75(4): 197-203. [Dioxys pomonae pomonae Cockerell, 1910]

Sheffield CS, Heron JM (2019[2018]) The bees of British Columbia (Hymenoptera: Apoidea, Apiformes). Journal of the Entomological Society of British Columbia 115: 44-85. [Andrena (Andrena) saccata Viereck, 1904, Andrena (Andrena) washingtoni Cockerell, 1901, Calliopsis scitula scitula (Cresson, 1878), Panurginus atriceps (Cresson, 1878), Panurginus cressoniellus Cockerell, 1898, Panurginus ineptus Cockerell, 1922, Habropoda cineraria (Smith, 1879), Habropoda murihirta (Cockerell, 1905), Brachymelecta californica (Cresson, 1878), Colletes compactus hesperius Swenk, 1906, Agapostemon femoratus Crawford, 1901, Dufourea dilatipes Bohart, 1948, Sphecodes clematidis Robertson, 1897, Anthidiellum robertsoni (Cockerell, 1904), Dioxys pomonae pomonae Cockerell, 1910, Macropis (Macropis) nuda (Provancher, 1882), Habropoda miserabilis Cresson, 1878, Melecta (Melecta) pacifica pacifica Cresson, 1878, Agapostemon obliquus (Provancher, 1888), Atoposmia abjecta abjecta (Cresson, 1878), Colletes gilensis Cockerell, 1897] https://journal.entsocbc.ca/index.php/journal/article/view/1001/1097

Horning DS (1966) Distribution records for the genus Dioxys in the Pacific Northwest (Hymenoptera: Megachilidae). Proceedings of the Entomological Society of Washington 68(2): 157. [Dioxys pomonae pomonae Cockerell, 1910]

Criddle N, Curran CH, Viereck HL, Buckell ER (1924) The entomological record, 1923. Annual Report of the Entomological Society of Ontario 54: 87-102. [Andrena (Callandrena) accepta Viereck, 1916, Andrena aliciae Robertson, 1891, Andrena (Andrena) carolina Viereck, 1909, Andrena (Andrena) saccata Viereck, 1904, Andrena (Andrena) washingtoni Cockerell, 1901, Agapostemon sericeus (Forster, 1771), Sphecodes clematidis Robertson, 1897, Sphecodes davisii Robertson, 1897, Colletes aestivalis Patton, 1879]

Knerer G, Atwood CE (1966) An annotated check list of the genus Andrena in Ontario (Hymenoptera: Andrenidae). Proceedings of the Entomological Society of Ontario 94: 41-56. [Andrena aliciae Robertson, 1891, Andrena (Andrena) frigida Smith, 1853]

COSEWIC (2011) COSEWIC Assessment and Status Report on the Macropis Cuckoo Bee Epeoloides pilosulus in Canada. Committee of the Status of Endangered Wildlife in Canada, Ottawa. [Macropis (Macropis) nuda (Provancher, 1882)] http://www.registrelep-sararegistry.gc.ca/document/ default_e.cfm?documentID=2297

Webb DW (1980) Primary insect types in the Illinois Natural History Survey Collection, exclusinve of the Collemboa and Thysanoptera. Illinois Natural History Survey Bulletin 32(2): 55-191. [Andrena (Andrena) macoupinensis Robertson, 1900, Epeolus autumnalis Robertson, 1902, Colletes latitarsis Robertson, 1891, Chelostoma philadelphi (Robertson, 1891), Macropis (Macropis) nuda (Provancher, 1882)]

Crawford JC (1913) Some bees from New Brunswick, with description of a new species of Heriades. The Canadian Entomologist 45(8): 269-273. [Macropis (Macropis) nuda (Provancher, 1882)] https://doi.org/10.4039/Ent45269-8

Criddle N (1926) The entomological record, 1925. Annual Report of the Entomological Society of Ontario 56: 94–107. [Panurginus beardsleyi (Cockerell, 1904), Agapostemon femoratus Crawford, 1901, Macropis (Macropis) nuda (Provancher, 1882)]

Romankova T (2003) Bees of the genus Colletes of Ontario (Hymenoptera, Apoidea, Colletidae). Journal of the Entomological Society of Ontario 134: 91-106. http://www.entsocont.ca/uploads/3/0/2/6/30266933/134_91_106.pdf

Ainslie C (1937) Notes on the biology of two panurgine bees. The Canadian Entomologist 69(5): 97-100. [Holcopasites calliopsidis calliopsidis (Linsley, 1943)] https://doi.org/10.4039/Ent6997-5

Albarda W, Bijleveld RT, Career AW Jr, Dreessens WH, Everts EJG, Groll HW, van Zouteveen HHH, Kinker J, Leesberg AFA, van Leeuwen J Jr, Lodeesen JW, Maitland RT, Piaget E, Ritsema C, Swierstra KN, Veth PJ, Veth HJ, van der Wulp FM. (1880) Verslag van de Dertiende Wintervergadering der Nederlandsche Entomologische Vereeniging, Gehouden te Leiden op Zondag 28 December 1879, des morgens ten 11 ure. Tijdschrift voor entomologie 23: lxxxvi-xcix. [Anthophora bomboides solitaria Ritsema, 1880]

LaBerge WE, Ribble DW (1966) The nests and larvae of two species of Agapostemon (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 39(3): 467-472. [Agapostemon sericeus (Forster, 1771)] http://www.jstor.org/stable/25083542

Day MC, Fitton MG (1977) Discovery in the Linnaean collection of type-material of insects described by Johann Reinhold Forster, with notes on the Hymenoptera. Biological Journal of the Linnean Society 9: 31-43. [Agapostemon sericeus (Forster, 1771)] https://doi.org/10.1111/j.1095-8312.1977.tb00257.x

Patenaude A (2007) Diversity, composition, and seasonality of wild bees (Hymenoptera: Apoidea) in a northern mixed-grass prairie preserve. Master’s thesis. University of Manitoba, Winnipeg, Manitoba, Canada. [Agapostemon sericeus (Forster, 1771)]

Sugar A, Finnamore A, Goulet H, Cumming J, Kerr JT, De Giusti M, Packer L (1999) A preliminary survey of symphytan and aculeate Hymenoptera from oak savannahs in southern Ontario. Proceedings of the Entomological Society of Ontario 129: 9-18. [Agapostemon sericeus (Forster, 1771), Lasioglossum (Dialictus) admirandum (Sandhouse, 1924), Sphecodes clematidis Robertson, 1897, Sphecodes davisii Robertson, 1897, Sphecodes galerus Lovell and Cockerell, 1907, Sphecodes heraclei heraclei Robertson, 1897]

Lincoln PG (1981) Phylogeny, Host Plant Relations and Speciation in Genus Dufourea (Hymenoptera; Apoidea). PhD Thesis, University of California, Santa Cruz. 307 pp.

Onuferko TM, Sheffield CS (2022) A new species of Epeolus Latreille, 1802 (Hymenoptera: Apidae) from western North America. Insecta Mundi 940: 1-12. [Epeolus emiliae Onuferko and Sheffield, 2022] https://journals.flvc.org/mundi/article/view/131328

Brumley RL (1965) A revision of the bee genus Epeolus Latreille of western America North of Mexico. MSc Thesis. Utah State University, Logan, iii + 92 pp. [Epeolus ainsliei Crawford, 1932, Epeolus americanus (Cresson, 1878), Epeolus autumnalis Robertson, 1902]

Onuferko TM (2017) Cleptoparasitic bees of the genus Epeolus Latreille (Hymenoptera: Apidae) in Canada. Canadian Journal of Arthropod Identification No. 30: 1–62. [Epeolus ainsliei Crawford, 1932, Epeolus americanus (Cresson, 1878), Epeolus autumnalis Robertson, 1902] https://doi.org/10.3752/cjai.2017.30

Onuferko TM (2018) A revision of the cleptoparasitic bee genus Epeolus Latreille for Nearctic species, north of Mexico (Hymenoptera, Apidae). ZooKeys 755: 1-185. [Epeolus ainsliei Crawford, 1932, Epeolus americanus (Cresson, 1878), Epeolus autumnalis Robertson, 1902] https://doi.org/10.3897/zookeys.755.23939

Wolf AT, Ascher JS (2009) Bees of Wisconsin (Hymenoptera: Apoidea: Anthophila). Great Lakes Entomologist 41: 129-168.

Cockerell TDA (1909) Two new bees. The Canadian Entomologist 41(1): 35-37. [Nomada snowii Cresson, 1878] https://doi.org/10.4039/Ent4135-1

Swenk MH (1915) Studies of North American bees III. Families Nomadidae and Stelididae. University Studies of the University of Nebraska 15(2): 155-193. [Nomada snowii Cresson, 1878, Anthidiellum robertsoni (Cockerell, 1904)]

Broemeling DK (1988) A revision of the Nomada subgenus Nomadita of North America (Hymenoptera: Anthophoridae). The Pan-Pacific Entomologist 64(4): 321-344. [Nomada aquilarum Cockerell, 1903, Nomada snowii Cresson, 1878] https://biostor.org/reference/244662

Cresson ET (1916) The Cresson types of Hymenoptera. Memoirs of the American Entomological Society 1: 1-141. [Calliopsis coloradensis Cresson, 1878, Calliopsis scitula scitula (Cresson, 1878), Epeolus americanus (Cresson, 1878), Holcopasites pulchellus (Cresson, 1878), Melecta (Melecta) pacifica fulvida Cresson, 1879, Melecta (Melecta) thoracica Cresson, 1875, Nomada snowii Cresson, 1878, Brachymelecta californica (Cresson, 1878), Heriades carinata Cresson, 1864, Eucera (Synhalonia) lepida (Cresson,1878)]

Rodeck HG (1949) North American bees of the genus Nomada, subgenus Callinomada (Hymenoptera: Apoidea). Annals of the Entomological Society of America 42(2):174-186. [Nomada aquilarum Cockerell, 1903, Nomada snowii Cresson, 1878] https://doi.org/10.1093/aesa/42.2.174

Cockerell TDA (1903) New American Hymenoptera, mostly of the genus Nomada. Annals and Magazine of Natural History, Series 7 12(68): 200-214. [Nomada aquilarum Cockerell, 1903] http://dx.doi.org/10.1080/00222930308678841

Swenk MH (1913) Studies of North American bees I. Family Nomadidae. Univeristy Studies of the University of Nebraska 12(1): 1-113. [Nomada aquilarum Cockerell, 1903]

Droege S, Rightmyer MG, Sheffield CS, Brady SG (2010) New synonymies in the bee genus Nomada from North America (Hymenoptera: Apidae). Zootaxa 2661: 1-32. [Nomada fervida Smith, 1854]

Cockerell TDA (1903) North American bees of the genus Nomada. Proceedings of the Academy of Natural Sciences of Philadelphia 55: 580-614. [Nomada fervida Smith, 1854] https://www.jstor.org/stable/4062915

Smith F (1854) Catalogue of Hymenopterous Insects in the Collection of the British Museum, Part II, Apidae. London: Taylor and Francis. [Chelostoma rapunculi (Lepeletier, 1841)]

Cockerell TDA (1904) The bees of southern California. VI. Bulletin of the Southern California Academy of Sciences 3: 159-162. [Habropoda tristissima (Cockerell, 1904)]

Brooks RW (1988) Systematics and phylogeny of anthophorine bees (Hymenoptera; Anthophoridae: Anthophorini). The University of Kansas Science Bulletin 53(9): 437-575. [Habropoda miserabilis Cresson, 1878, Anthophora abrupta Say, 1837, Habropoda tristissima (Cockerell, 1904)]

Lutz FE, Cockerell TDA (1920) Notes on the distribution and bibliography of North American bees of the families, Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae. Bulletin of the American Museum of Natural History 42(15): 491-641. [Habropoda tristissima (Cockerell, 1904)] https://doi.org/10.5962/bhl.title.17909

Fowler C (1899) The Habropoda and Didasia of California. The Canadian Entomologist 31(1): 283-286. [Habropoda depressa Fowler, 1899] https://doi.org/10.4039/Ent31283-10

Cresson ET (1878) Descriptions of new species of North American bees. Proceedings of the Academy of Natural Sciences of Philadelphia 30: 181-221. [Habropoda miserabilis Cresson, 1878, Eucera (Synhalonia) lepida (Cresson,1878)]

Cockerell TDA (1909) Descriptions of some bees in the U.S. National Museum. Proceedings of the United States National Museum 36(1674): 411-420. [Habropoda miserabilis Cresson, 1878] https://doi.org/10.5479/si.00963801.36-1674.411

Cockerell TDA (1905) Three new bees from the southwest. Entomological News 16(3): 81-83. [Habropoda murihirta (Cockerell, 1905)]

Stainer J (1959) A collection of Hymenoptera from British Columbia. Proceedings of the Entomological Society of British Columbia 56: 65-66. [Habropoda murihirta (Cockerell, 1905)]

Cresson ET (1869) A list of the North American species of the genus Anthophora, with descriptions of new species. Transactions of the American Entomological Society 2: 289-293. [Anthophora (Mystacanthophora) walshii Cresson, 1869] http://www.jstor.org/stable/25076210

Cruden RW, Hermanutz L, Shuttleworth J (1984) The pollination biology and breeding system of Monarda fistulosa (Labiatae). Oecologia 64: 104-110. [Anthophora (Mystacanthophora) walshii Cresson, 1869] https://doi.org/10.1007/BF00377551

Wrigley RE, Westwood R, Murray C, Olynyk M, de March L (2021) Arthropod survey at Fort Ellice, Manitoba. Newsletter of the Biological Survey of Canada 40: 18-25. [Lasioglossum (Dialictus) admirandum (Sandhouse, 1924)]

Cockerell TDA, Sandhouse G (1924) Parasitic bees (Epeolinae and Melectinae) in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences, Series 4 13(19): 305-324. [Brachymelecta californica (Cresson, 1878)]

Fox WJ (1893) Synopsis of the North American species of Melecta. Entomological News 4: 143-144. [Brachymelecta californica (Cresson, 1878)]

Hurd PD, Linsley EG (1951) The melectine bees of California (Hymenoptera: Anthophoridae). Bulletin of the California Insect Survey 1(5): 119-140. [Melecta (Melecta) pacifica fulvida Cresson, 1879, Melecta (Melecta) separata callura (Cockerell, 1926), Melecta (Melecta) thoracica Cresson, 1875, Brachymelecta californica (Cresson, 1878)]

Linsley EG (1939) A revision of the Nearctic Melectinae. Annals of the Entomologcal Society of America 32(2): 429-468. [Melecta (Melecta) pacifica fulvida Cresson, 1879, Melecta (Melecta) separata callura (Cockerell, 1926), Melecta (Melecta) thoracica Cresson, 1875, Brachymelecta californica (Cresson, 1878), Melecta (Melecta) pacifica pacifica Cresson, 1878] https://doi.org/10.1093/aesa/32.2.429

Onuferko TM, Packer L, Genaro JA (2021) Brachymelecta Linsley, 1939, previously the rarest North American bee genus, was described from an aberrant specimen and is the senior synonym for Xeromelecta Linsley, 1939. European Journal of Taxonomy 754: 1–51. [Brachymelecta californica (Cresson, 1878)] https://doi.org/10.5852/ejt.2021.754.1393

Rozen JG (1969) The larvae of the Anthophoridae (Hymenoptera, Apoidea) Part 3. The Melectini, Ericrocini, and Rhathymini. American Museum Novitates 2382: 1-24. [Zacosmia maculata maculata (Cresson, 1879)]

Rozen JG (1991) Evolution of cleptoparasitism in anthophorid bees as revealed by their mode of parasitism and first instars (Hymenoptera: Apoidea). American Museum Novitates 3029: 1-36. [Zacosmia maculata maculata (Cresson, 1879)]

Torchio PF (1971) The biology of Anthophora (Micranthophora) peritomae Cockerell (Hymenoptera: Apoidea, Anthophoridae). Los Angeles Museum Contributions in Science 206: 1-14. [Zacosmia maculata maculata (Cresson, 1879)]

Torchio, PF, Youssef NN (1968) The biology of Anthophora (Micranthophora) flexipes and its cleptoparasite, Zacosmia maculata, including a description of the immature stages of the parasite. Journal of the Kansas Entomological Society 41(3): 289-302. [Zacosmia maculata maculata (Cresson, 1879)] https://www.jstor.org/stable/25083713

Hurd PD (1979) Introduction. Pgs. vii-xxx. In: Krombein KV, Hurd PD Jr, Smith DR. Catalog of Hymenoptera in America North of Mexico. Volume 3. Indexes. Smithsonian Institution Press, Washington, DC. [Melecta (Melecta) pacifica fulvida Cresson, 1879, Zacosmia maculata maculata (Cresson, 1879)]

Crawford JC (1906) Three new species of bees. The Canadian Entomologist 38(8): 282-284. [Holcopasites pulchellus (Cresson, 1878)] https://doi.org/10.4039/Ent38282-8

Hurd PD, Linsley EG (1972) Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoolology 114: 1-41. [Holcopasites calliopsidis calliopsidis (Linsley, 1943), Holcopasites illinoiensis (Robertson, 1891), Holcopasites pulchellus (Cresson, 1878), Holcopasites stevensi Crawford, 1915]

Linsley EG (1943) A revision of the genus Neopasites (Hymenoptera: Nomadidae). Transactions of the American Entomological Society 69(2/3): 119-140. [Holcopasites calliopsidis calliopsidis (Linsley, 1943), Holcopasites illinoiensis (Robertson, 1891), Holcopasites pulchellus (Cresson, 1878)] https://www.jstor.org/stable/25077508

Linsley EG, MacSwain JW, Smith RF (1956) Association of Holcopasites with Pseudopanurgus in Mexico (Hymenoptera: Anthophoridae, Andrenidae). The Pan-Pacific Entomologist 32: 82. [Holcopasites pulchellus (Cresson, 1878)]

Linsley EG (1944) New species of Neopasites with notes concerning others (Hymenoptera, Nomadidae). Journal of the New York Entomological Society 52: 277-280. [Holcopasites stevensi Crawford, 1915]

Rozen JG (1965) Biological notes on the cuckoo bee genera Holcopasites and Neolarra (Hymenoptera: Apoidea). Journal of the New York Entomological Society 73: 87-91. [Holcopasites stevensi Crawford, 1915]

Hefetz A, Eickwort GC, Blum MS, Cane J, Bohart GE (1982) A comparative study of the exocrine products of cleptoparasitic bees (Holcopasites) and their hosts (Calliopsis) (Hymenoptera: Anthophoridae, Andrenidae). Journal of Chemical Ecology 8(11): 1389-1397. [Holcopasites calliopsidis calliopsidis (Linsley, 1943)] https://doi.org/10.1007/BF01403102

Rozen JG (1966) The larvae of the Anthophoridae (Hymenoptera: Apoidea). Part 2. The Nomadidae. American Museum Novitates 2244: 1-38. [Holcopasites calliopsidis calliopsidis (Linsley, 1943)]

Rozen JG (1967) Review of the biology of panurgine bees, with observations on North American forms (Hymenoptera, Andrenidae). American Museum Novitates 2297: 1-44. [Holcopasites calliopsidis calliopsidis (Linsley, 1943)]

Shinn AF (1967) A revision of the bee genus Calliopsis and the biology and ecology of C. andreniformis (Hymenoptera, Andrenidae). University of Kansas Science Bulletin 46(21): 753-936. [Calliopsis chlorops Cockerell, 1899, Calliopsis coloradensis Cresson, 1878, Holcopasites calliopsidis calliopsidis (Linsley, 1943), Holcopasites illinoiensis (Robertson, 1891)]

Cooper KW (1993) The first Holcopasites from western California, H. ruthae n. sp., and H. linsleyi, a new species from southwestern Arizona (Hymenoptera, Nomadinae). Proceedings of the Entomological Society of Washington 95(1): 113-125. [Holcopasites illinoiensis (Robertson, 1891)]

Cockerell TDA (1921) Descriptions and records of bees.—XC. Annals and Magazine of Natural History, Series 9 7(39): 201-212. [Melecta (Melecta) pacifica fulvida Cresson, 1879] https://doi.org/10.1080/00222932108632512

Linsley EG (1938) Notes on the synonymy and distribution of some North American bees of the genus Bombomelecta (Hymenoptera). Entomological News 49: 160-163. [Melecta (Melecta) pacifica fulvida Cresson, 1879, Melecta (Melecta) pacifica pacifica Cresson, 1878]

Viereck HL (1903) Classification of bees of the genus Bombomelecta. Transactions of the American Entomological Society 29(2): 179-182. [Melecta (Melecta) pacifica fulvida Cresson, 1879] https://www.jstor.org/stable/25076757

Michener CD (1948) Notes on the American bees of the genus Melecta (Hymenoptera, Apoidea). Proceedings of the Entomological Society of Washington 50(1): 15-18. [Melecta (Melecta) pacifica fulvida Cresson, 1879, Melecta (Melecta) pacifica pacifica Cresson, 1878]

Linsley EG (1943) The genus Melecta in eastern North America and Porto Rico (Hymenoptera, Anthophoridae). Journal of the New York Entomological Society 51: 225-227. [Melecta (Melecta) pacifica pacifica Cresson, 1878]

Linsley EG (1945) A new species of Paranomada with notes on Melecta thoracica Cresson. Entomological News 56: 149-153. [Melecta (Melecta) thoracica Cresson, 1875]

Cockerell TDA (1926) An interesting bew bee from California. The Pan-Pacific Entomologist 3(2): 58. [Melecta (Melecta) separata callura (Cockerell, 1926)]

Thorp RW (1969) Ecology and behavior of Anthophora edwardsii (Hymenoptera: Anthophoridae). American Midland Naturalist 82(2): 321-337. [Melecta (Melecta) separata callura (Cockerell, 1926)] http://www.jstor.org/stable/2423781

Bouseman JK (1982) Note on the rediscovery of Xeromelecta interrupta (Cresson) in Illinois (Hymenoptera: Apoidea). Journal of the Kansas Entomological Society 55(2): 349-350. [Anthophora (Mystacanthophora) walshii Cresson, 1869] http://www.jstor.org/stable/25084296

Cresson ET (1879) Catalogue of North American Apidae. Transactions of the American Entomological Society 7: 215-232. [Eucera (Synhalonia) acerba (Cresson, 1879), Anthophora abrupta Say, 1837]

Frison TH (1922) Notes on the life history, parasites and inquiline associates of Anthophora abrupta Say, with some comparisons with the habits of certain other Anthophorinae (Hymenoptera). Transactions of the American Entomological Society 48(2): 137-156. [Anthophora abrupta Say, 1837] https://www.jstor.org/stable/25077067

Graham JR, Willcox E, Ellis JD (2015) The potential management of a ground-nesting, solitary bee: Anthophora abrupta (Hymenoptera: Apidae). Florida Entomologist 98(2): 528-535. [Anthophora abrupta Say, 1837] https://doi.org/10.1653/024.098.0220

Norden BB (1984) Nesting biology of Anthophora abrupta (Hymenoptera: Anthophoridae). Journal of the Kansas Entomological Society 57: 243–262. [Anthophora abrupta Say, 1837]

Norden BB, Scarborough AG (1982) Predators, parasites and associates of Anthophora abrupta Say (Hymenoptera: Anthophoridae). Proceedings of the New York Entomological Society 90: 181-185. [Anthophora abrupta Say, 1837]

North F, Lillywhite H (1980) The function of burrow turrets in a gregariously nesting bee. The Southwestern Naturalist 25: 373–378. [Anthophora abrupta Say, 1837]

Rau P (1922) Ecological and behavior notes on Missouri insects. Transactions of the Academy of Science of St. Louis 24: 1-71. [Anthophora abrupta Say, 1837]

Rau P (1929) The biology and behavior of mining bees, Anthophora abrupta and Entechnia taurea. Psyche 36(3): 155-181. [Anthophora abrupta Say, 1837] https://doi.org/10.1155/1929/96461

Riley CV (1877) On a remarkable new genus in Meloidae infesting mason-bee cells in the United States. Transactions of the Academy of Science of St. Louis 3: 563-565. [Anthophora abrupta Say, 1837]

Walsh BD (1868) Mason bees and their habits. American Entomologist 1: 8-11. [Anthophora abrupta Say, 1837]

Nininger HH (1920) Notes on the life-history of Anthophora stanfordiana. Psyche 27(6): 135-137. [Anthophora bomboides bomboides Kirby, 1838] https://doi.org/10.1155/1920/12643

Linsley EG (1945) A phorid fly from the nests of Anthophora in California. Bulletin of the Brooklyn Entomological Society 40(3): 67-68. [Anthophora bomboides bomboides Kirby, 1838]

Cockerell TDA (1908) Descriptions and records of bees.—XVIII. Annals and Magazine of Natural History, Series 8 1(3): 259-267. [Megachile albitarsis Cresson, 1872] https://doi.org/10.1080/00222930808692398

Graenicher S (1930) Bee-fauna and vegetation of the Miami region of Florida. Annals of the Entomological Society of America 23(1): 153-174. [Sphecodes heraclei heraclei Robertson, 1897] https://doi.org/10.1093/aesa/23.1.153

Harrington WH (1887) Insects infesting maple trees. Annual Report of the Entomological Society of Ontario 17: 22-33. [Megachile albitarsis Cresson, 1872]

Guignard JA (1887) Beginning an aquaintance with wild bees. Annual Report of the Entomological Society of Ontario 17: 51-53. [Megachile albitarsis Cresson, 1872]

Mitchell TB (1927) Notes on the Megachilidae. Psyche 34(5): 178-181. [Megachile addenda Cresson, 1878]

Cooper KW (1984) Discovery of first resident population of the European bee, Megachile apicalis in the United States (Hymenoptera, Megachilidae). Entomological News 95(5): 225-226. [Megachile apicalis Spinola, 1808] https://biostor.org/reference/77065

Cane JH, Schiffhauer D, Kervin LJ (1996) Pollination, foraging, and nesting ecology of the leafcutting bee Megachile (Delomegachile) addenda (Hymenoptera: Megachilidae) on cranberry beds. Annals of the Entomological Society of America 89(3): 361-367. [Megachile addenda Cresson, 1878] https://doi.org/10.1093/aesa/89.3.361

Cresson ET (1928) The types of Hymenoptera in the Academy of Natural Sciences of Philadelphia other than those of Ezra T. Cresson. Memoirs of the American Entomological Society 5: 1-90. [Andrena (Andrena) milwaukeensis Graenicher, 1903, Andrena (Andrena) saccata Viereck, 1904, Megachile addenda Cresson, 1878]

Graenicher S (1905) Some observations on the life history and habits of parasitic bees. Bulletin of the Wisconsin Natural History Society 3(4): 153-167. [Megachile addenda Cresson, 1878]

Viereck HL (1910) Hymenoptera, pages 579-699 in: Fowler HW, Smith JB, Stone W: The Insects of New Jersey. Annual Report of the New Jersey State Museum for 1909. New Jersey State Museum, MacCrellish & Quigley, Trenton, N.J. [Megachile addenda Cresson, 1878]

Cockerell TDA (1936) Two new bees from Hay River. The Canadian Entomologist 68(12): 282-283. [Andrena (Andrena) frigida Smith, 1853] https://doi.org/10.4039/Ent68282-12

Linsley EG (1951) Subfamily Andreninae. In Hymenoptera of America north of Mexico Synoptic Catalog. Edited by CFW Muesebeck, KV Krombein, and HK Townes. USDA Agricultural Monograph No. 2, Washington, D.C. pp 1052–1086. [Andrena (Andrena) frigida Smith, 1853]

Viereck HL (1924) Prodromus of Andrena, a genus of bees. The Canadian Entomologist 56(10): 237-244. [Andrena (Andrena) frigida Smith, 1853] https://doi.org/http://dx.doi.org/10.4039/Ent56237-10

Gusenleitner F, Schwarz M (2002) Weltweite Checkliste der Bienengattung Andrena mit Bemerkungen und Ergänzungen zu paläarktischen Arten (Hymenoptera, Apidae, Andreninae, Andrena). Entomofauna, Supplement 10. 1280 pp. [Andrena (Andrena) lapponica Zetterstedt, 1838]

Hirashima Y (1962) Systematic and biological studies of the family Andrenidae of Japan (Hymenoptera, Apoidea). Part 2. Systematics 1. Journal of the Faculty of Agriculture, Kyushu University 12: 117-154. [Andrena (Andrena) lapponica Zetterstedt, 1838]

Tadauchi O, Hirashima Y, Matsumura T (1987): Synopsis of Andrena (Andrena) of Japan (Hymenoptera, Andrenidae). Part II. Journal of the Faculty of Agriculture, Kyushu University 31(1/2): 37-54. [Andrena (Andrena) lapponica Zetterstedt, 1838]

Vander Kloet SP (1976) Nomenclature, taxonomy and biosystematics of Vaccinium section Cyanococcus (the blueberries) in North America. I. Natural barriers to gene exchange between Vaccinium angustifolium Ait. and Vaccinium corymbosum L. Rhodora 78: 503-515. [Andrena (Andrena) mandibularis Robertson, 1892]

Cockerell TDA (1898) Further notes on Andrena. The Entomologist 31: 88-90. [Andrena (Andrena) perarmata Cockerell, 1898]

Cockerell TDA (1908) Descriptions and records of bees.—XX. Annals and Magazine of Natural History (8) 2: 323-334. [Andrena (Andrena) perarmata Cockerell, 1898] https://doi.org/10.1080/00222930808692489

Kathirithamby J, Taylor SJ (2005) A new species of Halictophagus (Insecta: Strepsiptera: Halictophagidae) from Texas, and a checklist of Strepsiptera from the United States and Canada. Zootaxa 1056: 1-18. [Andrena (Andrena) saccata Viereck, 1904]

Gibson A (1914) The entomological record, 1913. Annual Report of the Entomological Society of Ontario 44: 106-129. [Sphecodes hudsoni Cockerell, 1911, Colletes gilensis Cockerell, 1897]

Cockerell TDA (1901) Contributions from the New Mexico Biological Station. —X. Observations on bees collected at Las Vegas, New Mexico, and in the adjacent mountaions. Annals and Magazine of Natural History, Series 7 7(37): 125-134. [Colletes gilensis Cockerell, 1897] https://doi.org/10.1080/00222930108678447

Timberlake PH (1969) A contribution to the systematics of North American species of Synhalonia (Hymenoptera, Apoidea). University of California Publications in Entomology 57: 1-76. [Eucera (Synhalonia) acerba (Cresson, 1879), Eucera (Synhalonia) lepida (Cresson,1878)]

Michener CD (1951) Tribe Eucerini. In: Muesebeck CF, Krombein KV, Townes HK (Eds) Hymenoptera of America north of Mexico Synoptic Catalog. 2. United States Department of Agriculture Agricultural Monograph, Washington. Pp. 1221-1233. [Eucera (Synhalonia) acerba (Cresson, 1879)]

Venables EP (1914) Some observations of the Hymenoptera of the Okanagan. Proceedings of the Entomological Society of British Columbia 4: 61-63. [Eucera (Synhalonia) acerba (Cresson, 1879)]

Rozen JG (1958) Monographic study of the genus Nomadopsis Ashmead (Hymenoptera: Andrenidae). University of California Publications in Entomology 15: 1-202. [Calliopsis scitula scitula (Cresson, 1878), Calliopsis barri (Rozen, 1959), Calliopsis australior Cockerell, 1897]

Michener CD (1951) Subfamily Panurginae. In: Muesebeck CF, Krombein KV, Townes HK (Eds) Hymenoptera of America north of Mexico Synoptic Catalog. 2. United States Department of Agriculture Agricultural Monograph, Washington. Pp. 1087-1104. [Calliopsis scitula scitula (Cresson, 1878), Panurginus cressoniellus Cockerell, 1898]

Rozen JG (1959) a new species of Nomadopsis and notes on some previously described ones. Proceedings of the Entomological Society of Washington 61(6): 255-259. [Calliopsis barri (Rozen, 1959)]

Ascher JS, Kornbluth S, Goelet RG (2014) Bees (Hymenoptera: Apoidea: Anthophila) of Gardiners Island, Suffolk County, New York. Northeastern Naturalist 21(1): 47-71. [Epeolus autumnalis Robertson, 1902, Sphecodes johnsonii Lovell, 1909] https://doi.org/10.1656/045.021.0105

Robertson C (1902) Some new or little known bees. Entomological News 13: 79-81. [Epeolus autumnalis Robertson, 1902]

Cockerell TDA, Porter W (1899) Contributions from the New Mexico Biological Station.—VII. Observations on bees, with descriptions of new genera and species. Annals and Magazine of Natural History, Series 7 4(24): 403-421. [Calliopsis chlorops Cockerell, 1899] https://doi.org/10.1080/00222939908678225

Cockerell TDA (1921) Western bees obtained by the American Museum expeditions. American Museum Novitates 24: 1-15.

Brooks RW (1983) Systematics and bionomics of Anthophora: the bomboides group and species groups of the New World (Hymenoptera: Apoidea, Anthophoridae). University of California Publications in Entomology 98: 1-86. [Anthophora bomboides solitaria Ritsema, 1880]

Porter CC (1983) Ecological notes on lower Rio Grande Valley Augochloropsis and Agapostemon (Hymenoptera\: Halictidae). Florida Entomologist 66(3): 344-353. [Agapostemon fasciatus Crawford, 1901]

Linsley EG (1960) Observations of some matinal bees at flowers of Cucurbita, Ipomoea and Datura in desert areas of New Mexico and southeastern Arizona. Journal of the New York Entomological Society 68(1): 13-20. [Agapostemon fasciatus Crawford, 1901] https://www.jstor.org/stable/25005708

Cazier MA, Linsley EG (1974) Foraging behaviour of some bees and wasps at Kallstroemia grandiflora flowers in southern Arizona and New Mexico. American Museum Novitates 2546: 1-20. [Agapostemon fasciatus Crawford, 1901]

Cockerell TDA (1919) The bees of the Rocky Mountain National Park (Hymenop.). Entomological News 30: 286-294. [Panurginus cressoniellus Cockerell, 1898]

Cockerell TDA (1922) Bees of the genus Panurginus obtained by the American Museum Rocky Mountain Expeditions. American Museum Novitates 36: 1-10. [Panurginus beardsleyi (Cockerell, 1904), Panurginus cressoniellus Cockerell, 1898, Panurginus ineptus Cockerell, 1922]

Cockerell TDA (1912) New records of bees (Hymen.). Entomological News 23: 444-447.

Crawford JC (1926) North American bees of the genus Panurginus. Proceedings of the Entomological Society of Washington 28: 207-214. [Panurginus beardsleyi (Cockerell, 1904), Panurginus cressoniellus Cockerell, 1898, Panurginus ineptus Cockerell, 1922]

Crawford JC (1915) Descriptions of new Hymenoptera, No. 9. Proceedings of the United States National Museum 48(2087): 577-586. [Panurginus beardsleyi (Cockerell, 1904)] https://biostor.org/reference/3936

Rust RW (1976) Notes on the biology of North American species of Panurginus (Hymenoptera: Andrenidae). The Pan-Pacific Entomologist 52(2): 159-166. [Panurginus atriceps (Cresson, 1878)]

Timberlake PH (1971) On the identity of Panurginus ineptus Cockerell (Hymenoptera: Andrenidae). The Pan-Pacific Entomologist 47(2): 148. [Panurginus ineptus Cockerell, 1922]

Onuferko TM (2021) Anomalously pale-haired specimens in three genera of cleptoparasitic bees (Hymenoptera: Apidae: Nomadinae). The Great Lakes Entomologist 54(1): 53-57. [Epeolus ainsliei Crawford, 1932, Epeolus minimus (Robertson, 1902), Triepeolus helianthi (Robertson, 1897), Brachymelecta californica (Cresson, 1878)] https://scholar.valpo.edu/tgle/vol54/iss1/9

Ackerman AJ (1916) The carpenter-bees of the United States of the genus Xylocopa. Journal of the New York Entomological Society 24(3): 196-232. [Xylocopa sonorina Smith, 1874] https://www.jstor.org/stable/25003718

Gerling D (1982) Nesting biology and flower relationships of Xylocopa sonorina Smith in Hawaii (Hymenoptera: Anthophoridae). The Pan-Pacific Entomologist 58(4): 336-351. [Xylocopa sonorina Smith, 1874]

Hurd PD (1955) The carpenter bees of California. Bulletin of the California Insect Survey 4: 35-72. [Xylocopa sonorina Smith, 1874]

Hurd PD, Moure JS (1963) A classification of the large carpenter bees (Xylocopini) (Hymenoptera: Apoidea). University of California Publications in Entomology 29: 1-365. [Xylocopa sonorina Smith, 1874]

Janzen DH (1964) Xylocopa (Neoxylocopa) varipuncta nesting in driftwood in Mexico. The Pan-Pacific Entomologist 40(1): 65-66. [Xylocopa sonorina Smith, 1874]

Nishida T (1958) Pollination of the passion fruit in Hawaii. Journal of Economic Entomology 51(2): 146-149. [Xylocopa sonorina Smith, 1874] https://doi.org/10.1093/jee/51.2.146

Patton WH (1879) Notes on three species Xylocopa. The Canadian Entomologist 11(3): 60. [Xylocopa sonorina Smith, 1874] https://doi.org/10.4039/Ent1160-3

Sheffield C, Heron J, Musetti L (2020) Xylocopa sonorina Smith, 1874 from Vancouver, British Columbia, Canada (Hymenoptera: Apidae, Xylocopinae) with comments on its taxonomy. Biodiversity Data Journal 8: e49918. [Xylocopa sonorina Smith, 1874] https://doi.org/10.3897/BDJ.8.e49918

Smith F (1874) X. Monograph of the genus Xylocopa Latr. Transactions of the Entomological Society of London 21(2): 181-206. [Xylocopa sonorina Smith, 1874]

Snelling RR (2003) Bees of the Hawaiian Islands, exclusive of Hylaeus (Nesoprosopis) (Hymenoptera: Apoidea). Journal of the Kansas Entomological Society 76(3): 342-356. [Xylocopa sonorina Smith, 1874] https://www.jstor.org/stable/25086121

Timberlake PH (1922) Identify of the Hawaiian carpenter bee of the genus Xylocopa (Hymenoptera). Proceedings of the Hawaiian Entomological Society 5: 51. [Xylocopa sonorina Smith, 1874]

Williams FX (1927) Notes on the habits of the bees and wasps of the Hawaiian Islands. Proceedings of the Hawaiian Entomological Society 6(3): 425-464. [Xylocopa sonorina Smith, 1874]

Heinrich B, Buchmann SL (1986) Thermoregulatory physiology of the carpenter bee, Xylocopa varipuncta. Journal of Comparative Physiology B 156: 557-562. [Xylocopa sonorina Smith, 1874] https://doi.org/10.1007/BF00691042

Hurd PD (1978) An annotated catalog of the carpenter bees (genus Xylocopa Latr.) of the Western Hemisphere (Hymenoptera, Anthophoridae). Smithsonian Institution Press, Washington, 116 pp. [Xylocopa sonorina Smith, 1874]

Leys R, Cooper SJB, Schwarz MP (2000) Molecular phylogeny of the large carpenter bees, genus Xylocopa (Hymenoptera: Apidae), based on mitochondrial DNA sequences. Molecular Phylogenetics and Evolution 17(3): 407-418. [Xylocopa sonorina Smith, 1874] https://doi.org/10.1006/mpev.2000.0851

Leys R, Cooper SJB, Schwarz MP (2002) Molecular phylogeny and historical biogeography of the large carpenter bees, genus Xylocopa (Hymenoptera: Apidae). Biological Journal of the Linnean Society 77(2): 249‑266. [Xylocopa sonorina Smith, 1874] https://doi.org/10.1046/j.1095-8312.2002.00108.x

Marshall LD, Alcock J (1981) The evolution of the mating system of the Carpenter bee Xylocopa varipuncta (Hymenoptera: Anthophoridae). Journal of Zoology: 193(3): 315-324. [Xylocopa sonorina Smith, 1874] https://doi.org/10.1111/j.1469-7998.1981.tb03447.x

Lieftinck MA (1956) Revision of the carpenter bees (Xylocopa Latreille) of the Moluccan Islands, with notes on other Indo-Australian species. Tijdschrift voor Entomologie 99: 55‑73. [Xylocopa sonorina Smith, 1874]

Williams PH (2021) Not just cryptic, but a barcode bush: PTP reanalysis of global data for the bumblebee subgenus Bombus s. str. supports additional species (Apidae, genus Bombus). Journal of Natural History 55(5-6): 271-282. [Bombus mckayi Ashmead, 1902] https://doi.org/10.1080/00222933.2021.1900444

Sheffield CS, Richardson L, Cannings S, Ngo H, Heron J, Williams PH (2016) Biogeography and designatable units of Bombus occidentalis Greene and B. terricola Kirby (Hymenoptera: Apidae) with implications for conservation status assessments. Journal of Insect Conservation. 20: 189-199. [Bombus mckayi Ashmead, 1902]

Williams PH, Brown MJF, Carolan JC, An J-D, Goulson D, Aytekin AM, Best LR, Byvaltsev AM, Cederberg B, Dawson R, Huang J, Ito M, Monfared A, Raina RH, Schmid-Hempel P, Sheffield CS, Šima P, Xie Z (2012) Unveiling cryptic species of the bumblebee subgenus Bombus s. str. world-wide with COI barcodes (Hymenoptera: Apidae). Systematics and Biodiversity 10(1): 21-56. [Bombus mckayi Ashmead, 1902] http://dx.doi.org/10.1080/14772000.2012.664574

Bequaert J (1920) Bees and wasps. The Ohio Journal of Science 20(7): 292-297. [Bombus mckayi Ashmead, 1902]

Cockerell TDA (1904) The bees of southern California.—I. Bulletin of the Southern California Academy of Sciences 3: 3–6. [Anthidiellum robertsoni (Cockerell, 1904)]

Cockerell TDA (1925) Anthidiine bees in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences, Fourth Series 14(15): 345-367. [Anthidiellum robertsoni (Cockerell, 1904)]

Leech HB (1948[1947]) Anthidiellum robertsoni and its nest (Hymenoptera: Megachilidae). Proceedings of the Entomological Society of British Columbia 44: 39. [Anthidiellum robertsoni (Cockerell, 1904)]

Cockerell TDA (1914) Names applied to the North American bees of the genera Lithurgus, Anthidium, and allies. Proceedings of the United States National Museum 47(2045): 87-94. [Anthidiellum robertsoni (Cockerell, 1904)] https://biostor.org/reference/79395

Michener CD (1951) Family Megachilidae. In: Muesebeck CF, Krombein KV, Townes HK (Eds) Hymenoptera of America north of Mexico Synoptic Catalog. 2. United States Department of Agriculture Agricultural Monograph, Washington. Pp. 1136-1186. [Anthidiellum robertsoni (Cockerell, 1904)]

Grigarick AA, Stange LA (1968) The pollen-collecting bees of the Anthidiini of California (Hymenoptera: Megachilidae). Bulletin of the California Insect Survey 9: 1-113. [Anthidiellum robertsoni (Cockerell, 1904)]

Schwarz HF (1928) Bees of the subfamily Anthidiinae, including some new species and varieties, and some new locality records. Journal of the New York Entomological Society 36: 369-418. [Anthidiellum robertsoni (Cockerell, 1904)]

Schwarz HF (1926) North American Dianthidium, Anthidiellum, and Paranthidium. American Museum Novitates 226: 1-25. [Anthidiellum robertsoni (Cockerell, 1904)]

Schwarz HF (1928) Anthidiinae collected mostly in Canada (Hymenop). The Canadian Entomologist 60(9): 212-217. [Anthidiellum robertsoni (Cockerell, 1904)] https://doi.org/10.4039/Ent60212-9

Michener CD (1953) Comparative morphological and systematic studies of bee larvae with a key to the families of hymenopterous larvae. University of Kansas Science Bulletin 35(8): 987-1102. [Anthidiellum robertsoni (Cockerell, 1904)]

Urban D (2001) Loyolanthidium gen. n. e três espécies novas neotropicais (Hymenoptera, Megachilidae). Revista Brasileira de Zoologia 18(1) : 63-70. [Anthidiellum robertsoni (Cockerell, 1904)]

Sheffield CS, Heron J, Gibbs J, Onuferko TM, Oram R, Best L, deSilva N, Dumesh S, Pindar A, Rowe G (2017) Contribution of DNA barcoding to the study of the bees (Hymenoptera: Apoidea) of Canada: progress to date. The Canadian Entomologist 149(6): 736-754. [Anthidiellum robertsoni (Cockerell, 1904)] https://doi.org/10.4039/tce.2017.49

Turell MJ (1976) Observations on the mating behavior of Anthidiellum notatum and Anthidiellum perplexum. The Florida Entomologist 59(1): 55-61. https://www.jstor.org/stable/3493170

Sheffield CS, Dumesh S, Cheryomina M (2011) Hylaeus punctatus (Hymenoptera: Colletidae), a bee species new to Canada, with notes on other non-native species. Journal of the Entomological Society of Ontario 142: 29-43. [Megachile xylocopoides Smith, 1853]

Mitchell TB (1956) Notes and descriptions in the megachilid subgenus Chelostomoides (Hymenoptera: Apoidea). The Pan-Pacific Entomologist 32(3): 129-138. [Megachile discorhina Cockerell, 1924]

Cockerell TDA (1937) Bees of the genus Sphecodes from Saskatchewan. American Museum Novitates 909: 1-4. [Sphecodes borealis Cockerell, 1937]

Gibson A (1912) The entomological record, 1911. Annual Report of the Entomological Society of Ontario 42: 89-112.

Meyer R (1919) Apidae — Sphecodinae. Archiv für Naturgeschichte 85(1): 79-160; 85(2): 161-242. [Sphecodes arroyanus Cockerell, 1904, Sphecodes confertus Say, 1837, Sphecodes hudsoni Cockerell, 1911, Sphecodes banksii Lovell, 1909]

Smith JB (1910) Report of New Jersey State Museum for 1909. MacCrellish and Quigley, Trenton, 888 pp. [Sphecodes confertus Say, 1837]

Sichel J (1865) Révision monographique, critique et synonymique du genre mellifère Sphecodes Latr., basé sur la méthode numérique; avec des remarques sur les moeurs des Sphécodes comme insectes nidifiants et non parasites. Annales de la Société entomologique de France, Quatrième série 5: 397-466. [Sphecodes confertus Say, 1837] https://biostor.org/reference/61259

Moure JS, Hurd PD (1987) An annotated catalog of the halictid bees of the Western Hemisphere (Hymenoptera: Halictidae). Smithsonian Institution Press, Washington, D.C. vii + 405 pp. [Sphecodes confertus Say, 1837]

Gibbs J, Ascher JS, Rightmyer MG, Isaacs R (2017) The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history. Zootaxa 4352: 1-160. [Sphecodes coronus Mitchell, 1956, Sphecodes davisii Robertson, 1897, Sphecodes hudsoni Cockerell, 1911, Sphecodes fattigi Mitchell, 1956]

Covell CV (1972) A catalog of the J.H. Lovell types of Apoidea with lectotype designations (Hymenoptera). Proceedings of the Entomological Society of Washington 74(1): 10-18. [Sphecodes davisii Robertson, 1897]

Graenicher S (1910) Wisconsin bees ̶ new and little-known species. The Canadian Entomologist 42(5): 157-160. [Sphecodes davisii Robertson, 1897] https://doi.org/10.4039/Ent42157-5

Sheffield CS, Kevan PG, Pindar A, Packer L (2013) Bee (Hymenoptera: Apoidea) diversity within apple orchards and old fields habitats in the Annapolis Valley, Nova Scotia, Canada. The Canadian Entomologist 145(1): 94-114. [Sphecodes davisii Robertson, 1897, Sphecodes johnsonii Lovell, 1909, Sphecodes fattigi Mitchell, 1956] https://doi.org/10.4039/tce.2012.89

Preble EA (1902) A biological investigation of the Hudson Bay region. United States Department of Agriculture, Division of Biological Survey, North American Fauna No. 22. Washington, D.C. 140 pp. [Sphecodes hudsoni Cockerell, 1911]

Walker F (1848) List of the specimens of dipterous insects in the collection of the British Museum. Part I. Edward Newman, London. 1172 pp. [Sphecodes hudsoni Cockerell, 1911]

Walker F (1852) Catalogue of the specimen of neuropterous insects in the collection of the British Musum. Part I.—(Phryganides—Perlides). Edward Newman, London. 34 pp. [Sphecodes hudsoni Cockerell, 1911]

Walker F (1855) List of the specimens of lepidopterous insects in the collection of the British Museum. Part V. —Lepidoptera Heterocera. Edward Newman, London. 1507 pp. [Sphecodes hudsoni Cockerell, 1911]

Handfield L (2022) The curious, and incorrect, case of “St. Martin’s Falls”, a type locality for many insect species described by Francis Walker: precision and correction. Zootaxa 5182(5) 499-500. [Sphecodes hudsoni Cockerell, 1911]

Handfield L, Handfield D (2020) The curious, and incorrect, case of “St. Martin’s Falls”, a type locality for many insect species described by Francis Walker. Zootaxa 4786(3): 437-443. [Sphecodes hudsoni Cockerell, 1911] https://doi.org/10.11646/zootaxa.4786.3.10

Sladen FWL (1918) Pollination of alfalfa by bees of the genus Megachile. The Agricultural Gazette 5(2): 125-126. [Megachile dentitarsus Sladen, 1919]

Sladen FWL (1919) Further notes on the latimanus group of the bee genus Megachile. The Canadian Entomologist 51(4): 85. [Megachile dentitarsus Sladen, 1919] https://doi.org/10.4039/Ent5185a-4

Gibson A (1917) The entomological record, 1916. Annual Report of the Entomological Society of Ontario 47: 137-171.

Sheffield C (2023) Agapostemon fasciatus Crawford (Hymenoptera, Halictidae), a valid North American bee species ranging into southern Canada. Biodiversity Data Journal 11: e103982. [Agapostemon fasciatus Crawford, 1901] https://doi.org/10.3897/BDJ.11.e103982

Cockerell TDA (1922) Bees of the genus Perdita from the western United States. American Museum Novitates 33: 1-14. [Perdita halictoides Smith, 1853]

Cockerell TDA (1896) The bees of the genus Perdita F. Smith. Proceedings of the Academy of Natural Sciences of Philadelphia 48: 25-107. [Perdita halictoides Smith, 1853] http://www.jstor.org/stable/4062171

Cockerell TDA (1896) The seventy-second Perdita. Entomological News 7: 255-256.

Cockerell TDA (1901) New and little-known bees from Nebraska. The Entomologist 34(458): 190-191. [Perdita halictoides Smith, 1853]

Michener CD (1954) Descriptions and records of North American Hoplitis and Anthocopa (Hymenoptera, Megachilidae). The Pan-Pacific Entomologist 30(1): 37-52. [Atoposmia abjecta abjecta (Cresson, 1878)] https://biostor.org/reference/246383

Michener CD (1936) Some western bees of the genus Osmia. The Canadian Entomologist 68(2): 39-43. [Atoposmia abjecta abjecta (Cresson, 1878), Atoposmia elongata (Michener, 1936)] https://doi.org/10.4039/Ent6839-2

Michener CD (1943) The American bees of the genus Anthocopa with notes on Old World subgenera (Hymenoptera, Megachilidae). Annals of the Entomological Society of America 36(1): 49-86. [Atoposmia abjecta abjecta (Cresson, 1878), Atoposmia elongata (Michener, 1936)] https://doi.org/10.1093/aesa/36.1.49

Cockerell TDA (1930) Bees from Mesa Verde, Colorado, in the American Museum of Natural History. American Museum Novitates 397: 1-8. [Atoposmia abjecta abjecta (Cresson, 1878)]

Parker FD (1975) Nest descriptions and associates of three American bees of the genus "Anthocopa" Lepeletier (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist. 51(2): 113-122.

Hurd PD, Michener CD (1955) The megachiline bees of California. Bulletin of the California Insect Survey 3: 1-247. [Chelostoma minutum Crawford, 1916, Atoposmia abjecta abjecta (Cresson, 1878)]

Davidson A (1896) Alcidamea producta Cress. and its parasites. Entomological News 7: 216-218.

Linsley EG, MacSwain JW (1941) The bionomics of Ptinus californicus, a depredator in the nests of bees. Bulletin of the Southern California Academy of Sciences 40(3): 126-137.

Parker FD (1977) Nests of Anthocopa enceliae (Cockerell) and A. elongata (Michener) (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist 53(1): 47-52. [Atoposmia elongata (Michener, 1936)]

Moldenke A, Neff J (1974) The bees of California: a catalogue with species relevance to pollination and ecological research. Tech. Rep. 74-3 (Part III of 3). 288 pp. Board of Studies in Biology, UC, Santa Cruz Campus, CA 95064. [Chelostoma phaceliae Michener, 1938, Atoposmia elongata (Michener, 1936)]

Parker FD (1988) Nesting biology of two North American species of Chelostoma (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist 64(1): 1-7. [Chelostoma minutum Crawford, 1916, Chelostoma phaceliae Michener, 1938]

Sedivy C, Praz CJ, Müller A, Widmer A, Dorn S (2008) Patterns of host-plant choice in bees of the genus Chelostoma: the constraint hypothesis of host-range evolution in bees. Evolution 62(10): 2487-2507. [Chelostoma minutum Crawford, 1916, Chelostoma phaceliae Michener, 1938, Chelostoma philadelphi (Robertson, 1891)] https://doi.org/10.1111/j.1558-5646.2008.00465.x

Cockerell TDA (1935) Some California bees. The Pan-Pacific Entomologist 11(2): 49-54. [Chelostoma minutum Crawford, 1916]

Crawford JC (1916) Nine new species of Hymenoptera. Insecutor Inscitiae Menstruus 4: 101-107. [Chelostoma minutum Crawford, 1916]

Michener CD (1938) American bees of the genus Chelostoma. The Pan-Pacific Entomologist 14(1): 36-45. [Chelostoma minutum Crawford, 1916, Chelostoma phaceliae Michener, 1938]

Parker FD, Bohart RM (1966) Host-parasite associations in some twig-nesting Hymenoptera from western North America. The Pan-Pacific Entomologist 42(2): 91-98. [Chelostoma phaceliae Michener, 1938]

Schletterer A (1889) Monographie der Bienen-Gattungen Chelostoma Latr. und Heriades Spin. Zoologisches Jahrbuch für Systematik 4: 591–691. [Chelostoma rapunculi (Lepeletier, 1841), Heriades carinata Cresson, 1864] https://biostor.org/reference/181132

Müller A (2015) Palaearctic Chelostoma bees of the subgenus Gyrodromella (Megachilidae, Osmiini): biology, taxonomy and key to species. Zootaxa 3936(3): 408-420. [Chelostoma rapunculi (Lepeletier, 1841)] https://doi.org/10.11646/zootaxa.3936.3.6

Tkalcu B (1967) Bemerkungen zur Taxonomie einiger paläarktischer Arten der Familie Megachilidae (Hymenoptera, Apoidea). Acta Entomologica Bohemoslovaca (Praha) 64: 91-104. [Chelostoma campanularum (Kirby, 1802), Chelostoma rapunculi (Lepeletier, 1841)]

Benoist R (1928) Notes diverses sur les hyménoptères mellifères. Bulletin de la Société Entomologique de France 1928: 107-109. [Chelostoma rapunculi (Lepeletier, 1841)]

Schwarz M, Gusenleitner F, Westrich P, Dathe HH (1996) Katalog der Bienen Österreichs, Deutschlands und der Schweiz (Hymenoptera, Apidae). Entomofauna (Ansfelden) 8 (Supplement): 1–398. [Chelostoma campanularum (Kirby, 1802), Chelostoma rapunculi (Lepeletier, 1841)]

Nylander W (1848) Adnotationes in expositionem monographicam apum borealium. Notiser ur Sällskapets pro Fauna et Flora Fennica Förhandlingar 1: 165–282. [Chelostoma rapunculi (Lepeletier, 1841)]

Chevrier F (1872) Hymenoptères divers du bassin du Léman. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 3: 487-510. [Chelostoma rapunculi (Lepeletier, 1841)]

Müller A (2022) Palaearctic Osmiine Bees, ETH Zürich, http://blogs.ethz.ch/osmiini [accessed 24 May 2023]. http://blogs.ethz.ch/osmiini

Engel MS, Griswold T (2019) On the classifcation of North American Chelostoma (Hymenoptera: Megachilidae). Journal of Melittology 90: 1-6. [Chelostoma campanularum (Kirby, 1802)]

Morawitz F (1867) Ein Beitrag zue Hymenopteren-Fauna des Ober-Engadins. Horae Societatis Entomologicae Rossicae 5: 39–71. [Chelostoma rapunculi (Lepeletier, 1841)]

Benoist R (1934) Descriptions d’espèces nouvelles paléarctiques d’hyménoptères mellifères. Bulletin de la Société Entomologique de France 39: 158-160. [Chelostoma rapunculi (Lepeletier, 1841)]

Herrich-Schäffer GAW (1840) Nomenclator entomologicus. Verzeichniss der europäischen Insecten; zur Erleichterung des Tauschverkehrs mit Preisen versehen. Zweites Heft. Coleoptera, Orthoptera, Dermatoptera and Hymenoptera. Bei Friedrich Pustet, Regensburg. vii + 244 pp. [The bulk of the work is “Synopsis Generum Hymenopterorum” that apprears on pp. 33-244.] [Chelostoma rapunculi (Lepeletier, 1841)]

Rozen JG, Go HH (2015) Descriptions of the egg and mature larva of the bee Chelostoma (Prochelostoma) philadelphi with additional notes on nesting biology (Hymenoptera: Megachilidae: Megachilinae: Osmiini). American Museum Novitates 3844: 1-7. [Chelostoma philadelphi (Robertson, 1891)]

Eickwort GC (1981) Two European species of Chelostoma established in New York State (Hymenoptera: Megachilidae). Psyche 87(3-4): 315-323. [Chelostoma campanularum (Kirby, 1802), Chelostoma rapunculi (Lepeletier, 1841)]

Eardley C, Urban R (2010) Catalogue of Afrotropical bees (Hymenoptera: Apoidea: Apiformes). Zootaxa 2455: 1-548.

Friese H (1909) 8. Hymenoptera. 5. Apidae. In: Sjoestedts, B. Y. Kilimandjaro-Meru Expedition. Stockholm, 8: 119-168.

Cresson ET (1864) On the North American species of several genera of Apidae. Proceedings of the Entomological Society of Philadelphia 2: 373-411.

Fischer RL (1955) A nest of Heriades variolosus (Cress.); (Hymenoptera: Megachilidae). The Canadian Entomologist 87(1): 33-36. [Heriades variolosus variolosus (Cresson, 1872)] https://doi.org/10.4039/Ent8733-1

Michener CD (1938) American bees of the genus Heriades. Annals of the Entomological Society of America 31(4): 514-531. [Heriades variolosus variolosus (Cresson, 1872)] https://doi.org/10.1093/aesa/31.4.514

Cockerell TDA (1897) Contributions from the New Mexico biological station.—VI. The New Mexico bees of the genus Heriades, and a new Halictus. Annals and Magazine of Natural History, Series 6 19(116): 135-143. [Heriades variolosus variolosus (Cresson, 1872)] https://doi.org/10.1080/00222939708680608

Robertson C (1905) Some new or little–known bees.—V. The Canadian Entomologist 37(7): 236-237. [Heriades variolosus variolosus (Cresson, 1872)] https://doi.org/10.4039/Ent37236-7

Griswold T (1985) A generic and subgeneric revision of the Heriades genus-group (Hymenoptera: Megachilidae). PhD Thesis, Utah State University, Logan. xiii + 207 pp.

Sheffield C, Palmier KM (2023) Range expansion of Bombus (Pyrobombus) bimaculatus Cresson in Canada (Hymenoptera, Apidae). Biodiversity Data Journal 11: e104657. https://doi.org/10.3897/BDJ.11.e104657

Cresson ET (1863) List of the North American species of Bombus and Apathus. Proceedings of the Entomological Society of Philadelphia 2: 83-116.

Curry PS (1984) Bumble bees of Saskatchewan (Hymenoptera: Apidae): a survey of their geographic distribution. Saskatchewan Museum of Natural History, Natural History Contributions 5: 1‑44.

Bequaert J, Plath OE (1925) Description of a new Psithyrus, with an account of Psithyrus laboriosus, and notes on bumblebees. Bulletin of the Museum of Comparative Zoology at Harvard College 67: 265‑288.

Bertoni AW, Schrottky C (1910) Beitrag zur Kenntnis der mit Tetralonia verwandten Bienen aus Südamerika. Zoologische Jahrbücher 29: 563-596.

Cockerell TDA (1914) Bees from Ecuador and Peru. Journal of the New York Entomological Society 22: 306-328.

Cockerell TDA (1918) Bees from British Guiana. Bulletin of the American Museum of Natural History 38(20): 685-705.