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Macropis nuda (Provancher, 1882)


Scientific Name: Macropis nuda (Provancher, 1882)

Common Name: Dark-legged Yellow Loosestrife Bee


*Eucera nuda Provancher, 1882a: 174 [♀].

     Lectotype ♀, designated by Sheffield and Perron (2014: 136). CANADA, Quebec, Chicoutimi [ULQC no. 851].

Macropis morsei Robertson, 1897: 338 [♂, ♀]. Synonymy by Mitchell (1960: 527).

     Lectotype ♂, designated by W.E. LaBerge, in Webb (1980: 118). USA, Massachusetts, Winchendon, 5 July 1892, by A.P. Morse [INHS]. 

Macropis clypeata Swenk, 1907: 293 [♂]. Synonymy by Snelling and Stage (1995: 29).

     Holotype ♂. USA, Nebraska, Sioux County, Warbonnet Canon, 13 July 1901, by M. Cary, on Pentstemon [UNSM].

Macropsis clypeata Muma, 1952: 19. Lapsus of Macropis clypeata Swenk, 1907.


Taxonomic Notes

DNA Barcode Index Number (BIN): BOLD:AAD9500

Biology: Patton (1879) was among the first to recognize and detail the relationship of Macropis bees to Lysimachia. Rozen and Jacobson (1980) and Cane et al. (1983) studied the nesting and mating behaviours in detail, the former describing the immature stages. This species, like all bees of the genus Macropis, is a oligolege on oil producing flowers of the genus Lysimachia (Popov 1958; Cane et al. 1983; Michez and Patiny 2005; Dötterl and Schäffler 2006), but visits a number of other genera for nectar. This species is likely the main host for the cleptoparasitic bee, Epeoloides pilosulus in Canada (Sheffield et al. 2004; Sheffield and Heron 2018).

Distribution in Canada: Provancher 1882 [QC, type locality]; Crawford 1913 [NB, as M. morsei Robertson]; Criddle 1926 [SK, ON, QC]; Mitchell 1960 [southern Canada, NS]; Hurd 1979 [southern CAN, NS]; Sheffield et al. 2004 [NS]; 2014 [AB, SK, MB]; Sheffield and Heron 2018 [BC, AB, SK, MB, ON, QC, NB, NS], 2019 [BC]; Gibbs et al. 2021 [MB], 2023 [MB].

Extent of Occurrence (EOO) in Canada ( 2,215,318 km2

Index of Area of Occupancy (IAO) in Canada ( 544 km2

Conservation Status in Canada

COSEWIC: Has not been assessed. The cleptoparasite of this species, Epeoloides pilosulus was assessed as Endangered in Canada by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) (COSEWIC 2011).

Wild Species 2020/NatureServe: National - N4; BC - SU, AB - SU, SK - SU, MB - SU, ON -SU, QC - SNR, NB - S4, NS - SU


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.

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.

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.

Mitchell TB (1960) Bees of the Eastern United States. Volume 1. North Carolina Agricultural Experiment Station Technical Bulletin 141: 1-538.

Provancher L (1882a) Faune Canadienne. Les Insectes Hyménoptères. Naturaliste canadien 13: 168-175.

Robertson C (1897) North American bees−descriptions and synonyms. Transactions of the Academy of Sciences of St. Louis 7: 315-356.

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

Sheffield C, Perron J (2014) Annotated catalogue of the bees described by Léon Provancher (Hymenoptera: Apoidea). The Canadian Entomologist 146 (2): 117-169.

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.

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].

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.

Swenk MH (1907) The bees of Nebraska.—III. Entomological News 18: 293-300.

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.

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.

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.

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.

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.

Sheffield CS, Heron JM (2019) The bees of British Columbia (Hymenoptera: Apoidea, Apiformes). Journal of the Entomological Society of British Columbia 115: 44-85.

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. 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.

Crawford JC (1913) Some bees from New Brunswick, with description of a new species of Heriades. The Canadian Entomologist 45(8): 269-273.

Criddle N (1926) The entomological record, 1925. Annual Report of the Entomological Society of Ontario 56: 94-107.

Sociality: Solitary
Nesting: Ground
Pollen Specialization: Narrow Oligolecty
Wintering Stage: Mature Larva

Crop Preference: Not Available
Non Crop Preference: Lysimachia terrestris, Symphoricarpos occidentalis, Solidago canadensis, Dalea candida, Apocynum sp., Taraxacum officinale, Apocynum cannabinum, Lysimachia ciliata, Oenothera villosa, Apocynum androsaemifolium

Distribution: Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Quebec, Saskatchewan
Ecozone: Atlantic Maritime, Boreal Shield, Mixwood Plains, Montane Cordillera, Pacific Maritime, Prairie, Western Interior Basin

Distribution Map