The University of Kansas Science Bulletin
The taxonomy of five subgenera of Coelioxys which are restricted primarily to the North American continent are reviewed. The recognition of a surprising amount of infraspecific variation in many species allowed the synonymization of 64 names into 25 presumably valid species. The following species are described as new: C. mitchelli, C. nodis, C. oaxacana, and C. serricaudata. Keys are presented to the subgenera of North American Coelioxys and to species in the five subgenera treated herein. Distribution maps, host records where known, season of flight, a discussion of habitat where remarkable, of geographic variation where noticed and of comparative comments complete the description or redescription of each species in the five subgenera.
Baker, J. R., "Taxonomy of Five Nearctic Subgenera of Coelioxys (Hymenoptera: Megachile)" (1975). An. Paper 268.
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