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References

Alfken JD (1907) Neue paläarktische Halictus-Arten. Zeitschrift für Systematische Hymenopterologie und Dipterologie 7: 202-206. [Halictus confusus confusus Smith, 1853]

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 frigida Smith, 1853, Andrena nigrihirta (Ashmead, 1890), Andrena trizonata (Ashmead, 1890), Melecta (Melecta) thoracica Cresson, 1875, 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 kirbiellus Curtis, 1835, 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. [Halictus farinosus, Smith, 1853] 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. [Halictus parallelus Say, 1837]

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, Megachile casadae Cockerell, 1898, Osmia marginipennis Cresson, 1878] 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. [Perdita bruneri Cockerell, 1897, Perdita swenki Crawford, 1915, 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). The 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 TDA (1910) New bees of the genus Prosopis. Entomological News 21: 67-71. [Hylaeus fedorica (Cockerell, 1909)]

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 frigida Smith, 1853, 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. [Andrena fulvicrista Viereck, 1924, Andrena banffensis Viereck, 1924 ] 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 perarmata Cockerell, 1898, Andrena excellens Viereck, 1924 , Andrena singularis Viereck, 1924 ] 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 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. [Andrena concinnula (Cockerell, 1898)]

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. [Colletes fulgidus fulgidus Swenk, 1904] 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. [Andrena amphibola (Viereck, 1904)] 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 hemileuca Viereck, 1904, Andrena perplexa Smith, 1853, Andrena saccata Viereck, 1904, Andrena washingtoni Cockerell, 1901, Andrena angustifovea Viereck, 1904] 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 hemileuca Viereck, 1904, Andrena saccata Viereck, 1904, Sphecodes hesperellus Cockerell, 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. [Augochlora pura pura (Say, 1837)] 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. [Megachile casadae Cockerell, 1898, Megachile fidelis Cresson, 1878, Megachile melanophaea Smith, 1853, Megachile perihirta Cockerell, 1898]

Cockerell TDA (1898) New and little known bees from Washington State. Proceedings of the Academy of Natural Sciences of Philadelphia 50: 50-56. [Colletes consors pascoensis Cockerell, 1898, Megachile melanophaea Smith, 1853]

Cockerell TDA (1899) Notes on American bees. Entomologist 32: 154-159. [Hoplitis producta producta (Cresson, 1864), Megachile fidelis Cresson, 1878, Megachile melanophaea Smith, 1853]

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. [Megachile casadae Cockerell, 1898, Megachile cleomis Cockerell, 1900, Megachile fortis Cresson, 1872, Megachile lippiae Cockerell, 1900, Megachile parallela Smith, 1853, Megachile snowi Mitchell, 1927] 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. [Megachile angelarum Cockerell 1902]

Cockerell TDA (1904) Some bees from San Miguel County, New Mexico. Entomologist 37: 5-9. [Anthidium porterae Cockerell, 1900, Megachile fortis Cresson, 1872, Colletes gilensis Cockerell, 1897]

Cockerell TDA (1904) Two new bees. Entomological News 15: 32-34. [Megachile perihirta Cockerell, 1898]

Cockerell TDA (1908) A new name in Megachile. The Canadian Entomologist 40(12): 460. [Megachile mellitarsis Cresson, 1878] 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, Megachile melanophaea Smith, 1853, Megachile texana Cresson, 1878, Megachile wheeleri Mitchell, 1927, 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. [Megachile cleomis Cockerell, 1900, Megachile fortis Cresson, 1872, Megachile gemula gemula Cresson, 1878, Megachile parallela Smith, 1853, Megachile texana Cresson, 1878, Megachile gemula vancouveriensis Provancher, 1888 ] 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 onobrychidis Cockerell, 1908, Megachile albitarsis Cresson, 1872, Megachile subexilis Cockerell, 1908] 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. [Colletes slevini Cockerell, 1925, Agapostemon texanus Cresson, 1872, Stelis callura Cockerell, 1925, Megachile gemula vancouveriensis Provancher, 1888 ]

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. [Andrena perplexa Smith, 1853, Agapostemon texanus Cresson, 1872, Halictus ligatus Say, 1837, Halictus parallelus Say, 1837, Heriades variolosus variolosus (Cresson, 1872), Megachile brevis Say, 1837, Megachile fortis Cresson, 1872, Megachile gentilis Cresson, 1872, Megachile parallela Smith, 1853, Osmia texana Cresson, 1872, Brachymelecta interrupta (Cresson, 1872), Megachile albitarsis Cresson, 1872, Osmia subfasciata 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 crotchii Cresson, 1878, Nomada snowii Cresson, 1878, Brachymelecta californica (Cresson, 1878), Megachile addenda Cresson, 1878, Megachile brevis Say, 1837, Megachile fidelis Cresson, 1878, Megachile mellitarsis Cresson, 1878, Megachile mendica Cresson, 1878, Megachile texana Cresson, 1878, Osmia bella Cresson, 1878, Osmia conjuncta Cresson, 1864, Osmia georgica Cresson, 1878, Osmia marginipennis Cresson, 1878, Osmia montana montana Cresson, 1864, Osmia texana Cresson, 1872, Stelis monticola Cresson, 1864, Stelis nitida Cresson, 1878, Melecta (Melecta) pacifica pacifica Cresson, 1878, Anthidium formosum Cresson, 1878, Atoposmia abjecta abjecta (Cresson, 1878), Perdita affinis Cresson, 1878, Anthidium maculifrons Smith, 1854, Nomada scita Cresson, 1878, Nomada suavis Cresson, 1878, Protandrena illinoiensis (Cresson, 1878), Megachile mucida 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. [Andrena nevadensis (Cresson, 1879), Epeolus americanus (Cresson, 1878), Melecta (Melecta) pacifica fulvida Cresson, 1879, Zacosmia maculata maculata (Cresson, 1879), Anthidium palliventre Cresson, 1878, Megachile subnigra Cresson, 1879, Ashmeadiella cubiceps (Cresson, 1879), Anthidium formosum Cresson, 1878, Eucera (Synhalonia) acerba (Cresson, 1879), Megachile nevadensis Cresson, 1879, Megachile gemula vancouveriensis Provancher, 1888 ] 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. [Agapostemon virescens (Fabricius, 1775)]

Friese H (1903) Neue Arten der Bienen gattung Megachile aus Amerika. Zeitschrift für Systematische Hymenopterologie und Dipterologie 3(4): 246-248. [Megachile cleomis Cockerell, 1900, Megachile melanophaea Smith, 1853, Megachile texana Cresson, 1878]

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. [Megachile parallela Smith, 1853]

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(1): 15-21. [Megachile gemula gemula Cresson, 1878]

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. [Megachile mendica Cresson, 1878]

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. [Megachile parallela Smith, 1853]

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. [Megachile brevis Say, 1837, Megachile onobrychidis Cockerell, 1908]

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), Ptilothrix bombiformis (Cresson, 1878)]

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. [Megachile campanulae (Robertson, 1903), Megachile mucida Cresson, 1878]

Mitchell TB (1926) New species of Megachile, with notes and corrections (Hymenoptera). Transactions of the American Entomological Society 52(2): 111-118. [Megachile mucida Cresson, 1878] https://www.jstor.org/stable/25077157

Mitchell TB (1927) New megachilid bees. Psyche 34: 104-121. [Megachile anograe Cockerell, 1908, Megachile casadae Cockerell, 1898, Megachile snowi Mitchell, 1927, Megachile sublaurita Mitchell, 1927, Megachile umatillensis (Mitchell, 1927), Megachile wheeleri Mitchell, 1927]

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 anograe Cockerell, 1908, Megachile brevis Say, 1837, Megachile gentilis Cresson, 1872, Megachile sublaurita Mitchell, 1927, Megachile subnigra Cresson, 1879, Megachile pascoensis Mitchell, 1934, 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. [Megachile brevis Say, 1837, Megachile cleomis Cockerell, 1900, Megachile coquilletti Cockerell, 1915, Megachile fortis Cresson, 1872, Megachile gentilis Cresson, 1872, Megachile lippiae Cockerell, 1900, Megachile mendica Cresson, 1878, Megachile onobrychidis Cockerell, 1908, Megachile snowi Mitchell, 1927, Megachile texana Cresson, 1878, Megachile wheeleri Mitchell, 1927] 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. [Megachile gemula gemula Cresson, 1878, Megachile melanophaea Smith, 1853, Megachile mucida Cresson, 1878, Megachile gemula vancouveriensis Provancher, 1888 ] 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, Megachile fortis Cresson, 1872, Megachile perihirta Cockerell, 1898, Megachile sublaurita Mitchell, 1927, Megachile pascoensis Mitchell, 1934] 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 parallela Smith, 1853, 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. [Megachile fidelis Cresson, 1878, Megachile mellitarsis Cresson, 1878] https://www.jstor.org/stable/25077393

Mitchell TB (1936) 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. [Megachile casadae Cockerell, 1898, Megachile sublaurita Mitchell, 1927, Megachile subnigra Cresson, 1879, Megachile texana Cresson, 1878, Megachile wheeleri Mitchell, 1927, Megachile nevadensis Cresson, 1879] 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 angelarum Cockerell 1902, Megachile campanulae (Robertson, 1903), Megachile discorhina Cockerell, 1924, Megachile gemula vancouveriensis Provancher, 1888 , Megachile subexilis Cockerell, 1908] 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. [Megachile parallela Smith, 1853]

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. [Megachile fortis Cresson, 1872]

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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. [Halictus tripartitus Cockerell, 1895] 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. [Halictus ligatus Say, 1837] 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. [Osmia atrocyanea atrocyanea Cockerell, 1897, Osmia bruneri Cockerell, 1897, Osmia marginipennis Cresson, 1878, 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 gypsicolens 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), Andrena concinnula (Cockerell, 1898)] 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. [Andrena helianthi Robertson, 1891, Anthidium porterae Cockerell, 1900, Osmia subaustralis Cockerell, 1900] https://doi.org/10.1080/00222930008678307

Cockerell TDA (1901a) A new bee from California. Zeitschrift für Systematische Hymenopterologie und Dipterologie 1(2): 80. [Andrena knuthiana Cockerell, 1901]

Cockerell TDA (1901b) A new Andrena from California. Entomological News 12: 74. [Andrena knuthiana Cockerell, 1901]

Cockerell TDA (1901) Some insects of the Hudsonian Zone in New Mexico—VI. Psyche 9(308): 282-287. [Andrena birtwelli Cockerell, 1901, 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. [Andrena helianthi Robertson, 1891] 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. [Halictus tripartitus Cockerell, 1895]

Cockerell TDA (1903) North-American bees, and a new Homopteron. Annals and Magazine of Natural History, Series 7 12(70): 442-455. [Diadasia ochracea (Cockerell, 1903)] 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. [Colletes wilmattae Cockerell, 1904] 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, Brachymelecta interrupta (Cresson, 1872)] https://doi.org/10.1080/03745480409442962

Cockerell TDA (1905) New bees of the genera Osmia and Andrena. The Canadian Entomologist 37(11): 370-372. [Osmia texana Cresson, 1872] 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. [Eucera actuosa (Cresson, 1878)]

Cockerell TDA (1906) New Rocky Mountain bees, and other notes. The Canadian Entomologist 38(5): 160-166. [Hoplitis hypocrita (Cockerell, 1906), Megachile cleomis Cockerell, 1900, Megachile texana Cresson, 1878] 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 algida Smith, 1853, Andrena topazana Cockerell, 1906, Megachile melanophaea Smith, 1853, Osmia cyaneonitens Cockerell, 1906, Nomada crawfordi Cockerell, 1905]

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

Cockerell TDA (1906) Descriptions and records of bees.—IX. Annals and Magazine of Natural History, Series 7 17(99): 306-317. [Colletes andrewsi Cockerell, 1906, Colletes brevicornis Robertson, 1897, Halictus confusus arapahonum Cockerell, 1906] 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 milwaukeensis Graenicher, 1903, Osmia atrocyanea atrocyanea Cockerell, 1897, Osmia cyaneonitens Cockerell, 1906, Osmia marginipennis Cresson, 1878, Osmia subaustralis Cockerell, 1900] 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 perarmata Cockerell, 1898, Augochlora pura pura (Say, 1837), Nomada crawfordi Cockerell, 1905] https://doi.org/10.1080/00222930709487287

Cockerell TDA (1907) The bees of Boulder County, Colorado. The University of Colorado Studies 4: 239-259. [Colletes brevicornis Robertson, 1897, Heriades carinata Cresson, 1864, Megachile melanophaea Smith, 1853]

Cockerell TDA (1907) Descriptions and records of bees.—XVI. Annals and Magazine of Natural History, Series 7 20(116): 122-132. [Andrena bradleyi Viereck, 1907, Osmia bruneri Cockerell, 1897, Osmia marginipennis Cresson, 1878] 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. [Megachile subexilis Cockerell, 1908]

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), Hylaeus fedorica (Cockerell, 1909), Osmia subfasciata Cresson, 1872, Megachile mucida Cresson, 1878] 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. [Andrena subtrita Cockerell,1910] 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, Agapostemon texanus Cresson, 1872] https://doi.org/10.1080/00222931008692781

Cockerell TDA (1911) Some bees from western Canada. The Canadian Entomologist 43(1): 33-34. [Agapostemon texanus Cresson, 1872, 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. [Agapostemon texanus Cresson, 1872] 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 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. [Andrena cyanura Cockerell, 1916] https://doi.org/10.4039/ent48252-7

Cockerell TDA (1916) Some bees from Colorado. The Entomologist 49: 100-102. [Halictus virgatellus Cockerell, 1901]

Cockerell TDA (1916) Some bees in the British Museum. The Canadian Entomologist 48(8): 272-274. [Nomada aldrichi Cockerell, 1910, Nomada vernonensis Cockerell, 1916, Megachile melanophaea Smith, 1853] 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. [Halictus virgatellus Cockerell, 1901]

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. [Nomada bella bella Cresson, 1863, Augochlora pura pura (Say, 1837), 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. [Andrena sola Viereck, 1917]

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, Agapostemon texanus Cresson, 1872, 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. [Andrena cyanura Cockerell, 1916]

Cockerell TDA (1926) Descriptions and records of bees.—CXIII. Annals and Magazine of Natural History, Series 9 18(108): 621-627. [Anthidium tenuiflorae Cockerell, 1907] 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. [Andrena amphibola (Viereck, 1904)] 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. [Andrena amphibola (Viereck, 1904)]

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. [Andrena hallii Dunning, 1898] 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.

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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]

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Ghisbain G, Rosa P, Bogusch P, Flaminio S, Le Divelec R, Dorchin A, Kasparek M, Kuhlmann M, Litman J, Mignot M, Müller A, Praz C, Radchenko VG, Rasmont P, Risch S, Roberts SPM, Smit J, Wood TJ, Michez D, Reverté (2023) The new annotated checklist of the wild bees of Europe (Hymenoptera: Anthophila). Zootaxa 5327(1): 1-147. [Megachile cleomis Cockerell, 1900, Megachile texana Cresson, 1878] https://doi.org/10.11646/zootaxa.5327.1.1

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