Coelioxys costaricensis Cockerell, 1914:117, ♀. ♀, Guapiles, Costa Rica, June 18th, 1903 (U.S. National Museum, leg. J.C. Crawford); Rocha-Filho, 2015Rocha-Filho, L.C. da 2015. A contribution to the taxonomy of the cleptoparasitic bee subgenus Cyrtocoelioxys Mitchell of Coelioxys Latreille (Hymenoptera: Megachilidae). Annales Zoologici 65 (4):687-403.:689, Holotype ♀ (USNM). - 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, 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); Sagot et al., 2018Sagot, P, J. Mérida, R. Ayala & R. Vandame 2018. Situación actual del conocimiento de la fauna de abejas (Apoidea: Anthophila) del estado de Chiapas, México. In: (Ed.). Memorias X Congreso Mesoamericano sobre Abejas Nativas. 191-2011. (distribution).
Coelioxys sanguinea Friese, 1921:455, ♀. 1 ♀, Orizaba (Mexiko); 2 ♀♀, Para, 20 Febr. 1900 (leg. Ducke); Rocha-Filho, 2015Rocha-Filho, L.C. da 2015. A contribution to the taxonomy of the cleptoparasitic bee subgenus Cyrtocoelioxys Mitchell of Coelioxys Latreille (Hymenoptera: Megachilidae). Annales Zoologici 65 (4):687-403.:689, Syntypes ♀♀ (MNB). - Alfken, 1935-1936Alfken, J.D. 1935-1936. Ueber eine Bienenausbeute aus Venezuela. Veröffentlichungen aus dem Übersee-Museum Bremen 1:316-320.:320 ( listed as synonym of Coelioxys ignava Smith, 1879); Rocha-Filho, 2015Rocha-Filho, L.C. da 2015. A contribution to the taxonomy of the cleptoparasitic bee subgenus Cyrtocoelioxys Mitchell of Coelioxys Latreille (Hymenoptera: Megachilidae). Annales Zoologici 65 (4):687-403.:689 ( listed as synonym of Coelioxys costaricensis Cockerell, 1914).