Coelioxys alatiformis Friese, 1921:458, ♀. Holotype ♀, Para, 10. Juni 1901 (leg. Ducke). - Starr & Hook, 2003Starr, C.K. & Hook, A.W. 2003. The aculeate Hymenoptera of Trinidad, West Indies. Occasional Papers o the Department of Life Sciences, University of the West Indies 12:1-31. (distribution); Rocha-Filho & Packer, 2015Rocha-Filho, L.C. da & L. Packer 2015. Revision of the Neotropical subgenera Coelioxys (Platycoelioxys) Mitchell and C. (Rhinocoelioxys) Mitchell (Hymenoptera; Megachilidae) with the description of one new species. Zootaxa 3941 (2):151-203. (distribution); Rocha-Filho & Packer, 2016Rocha-Filho, L.C. da & L. Packer 2016. Phylogeny of the cleptoparasitic Megachilini genera Coelioxys and Radoszkowskiana, with the description of six new subgenera in Coelioxys (Hymenoptera: Megachilidae). Zoological Journal of the Linnean Society :. (distribution).
Coelioxys pachyceps Friese, 1921:474 Synonymized with Coelioxys alatiformis Friese, 1921 by Rocha-Filho & Packer, 2015Rocha-Filho, L.C. da & L. Packer 2015. Revision of the Neotropical subgenera Coelioxys (Platycoelioxys) Mitchell and C. (Rhinocoelioxys) Mitchell (Hymenoptera; Megachilidae) with the description of one new species. Zootaxa 3941 (2):151-203.:197.
Coelioxys spatuliventer Cockerell, 1927:11, ♀. Holotype ♀, Ivon, Beni, Bolivia, February (U.S.N.M., No. 29083, leg. W.M. Mann). - Rocha-Filho & Packer, 2015Rocha-Filho, L.C. da & L. Packer 2015. Revision of the Neotropical subgenera Coelioxys (Platycoelioxys) Mitchell and C. (Rhinocoelioxys) Mitchell (Hymenoptera; Megachilidae) with the description of one new species. Zootaxa 3941 (2):151-203.:197 ( listed as synonym of Coelioxys alatiformis Friese, 1921); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution).