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Coelioxys mesae Cockerell 1921


Scientific Name: Coelioxys mesae Cockerell 1921

Common Name: Coelioxys mesae


Coelioxys mesae Cockerell, 1921: 6 [♂‚]

     Holotype ♂‚. USA, Colorado, Mesa Verde National Park, on the Chapin mesa at about 37 degrees 12 min N., 108 degrees 29 min W., 5 July 1919, on Pentstemon coloradensis [AMNH]

Coelioxys flagrata Baker, 1972: 209 [♀] [nomen nudum]


Species Notes

Baker (1975: 715) described the ♀, likely based on his unpublished manuscript name (Baker 1972; Ph.D. thesis)



Bohart and Youssuf (1972) reported this species as a nest parasite of Megachile umatillensis, a species only recently recorded from Canada (Sheffield et al. 2014).



♀ body length:  mm; head length:  mm; head width:  mm; forewing length:  mm

♂‚ body length: mm; head length:  mm; head width:  mm; forewing length:  mm


Approximate Global Extent of Occurrence (EOO) (  km2

Index of Area of Occupancy (IAO) in Canada ( 4 km2



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.

Bohart GE, Youssuf NN (1972) Notes on the biology of Megachile (Megachiloides) umatillensis Mitchell (Hymenoptera: Megachilidae) and its parasites. Transactions of the Royal Entomological Society of London (124) 1: 1-19.

Cockerell TDA (1921) Some parasitic megachilid bees of the western United States. American Museum Novitates 21: 1-11.

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].

Sociality: Parasitic
Nesting: Ground
Pollen Specialization: Not Applicable
Wintering Stage: Mature Larva

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: Saskatchewan
Ecozone: Prairie

Distribution Map