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Megachile discorhina Cockerell, 1924


Scientific Name: Megachile discorhina Cockerell, 1924

Common Name: Megachile discorhina


Megachile discorhina Cockerell, 1924: 549 [♀].

     Holotype . MEXICO, Gulf of California, Palm Canyon, Angel de la Guarda Island, 3 May 1921, by E.P. Van Duzee [CAS no. 1514].


Taxonomic notes: Though Mitchell (1937: 405; 1965: 131) and Snelling (1990: 30) recognized the ♂, it has not been fully described, though both Mitchell (1937: 385; 1956: 136) and Snelling (1990: 5) incorporate it into their keys, the latter offering some diagnostic characters of both sexes, including images of the head of the ♀ and the metasoma of the ♂.

DNA Barcode Index Number (BIN):

Distribution in Canada: Sheffield pers. obs. [AB].

The single ♀ specimen at the CNC [CNC no. 1107422] likely represents either a mislabelled specimen, or an introduction (without establishment), as southern Alberta is well outside the known range of this species (Mitchell 1937; Snelling 1990). Snelling (1990) indicated it was a Creosote Scrub desert species from the southwestern USA and Baja California, Mexico.


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.

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.

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.

Mitchell TB (1956) Notes and descriptions in the megachilid subgenus Chelostomoides (Hymenoptera: Apoidea). The Pan-Pacific Entomologist 32(3): 129-138.

Sociality: Solitary
Nesting: Cavity Renter
Wintering Stage: Mature Larva

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: Alberta
Ecozone: Prairie

Distribution Map