Megacilissa gloriosa Fox, 1893:421, Hurd & Linsley, 1976Hurd, P.D. Jr. & E.G. Linsley 1976. The bee family Oxaeidae with a revision of the North American species (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 220:1-75.:29, Type (Academy of Natural Sciences, Philadelphia). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution). - As Protoxaea gloriosa: - Cockerell & Porter, 1899Cockerell, T.D.A. & W. Porter 1899. Contributions from the New Mexico Biological Station. - VII Observations on bees, with descriptions of new genera and species. The Annals and Magazine of Natural History ser. 7: v. 4:403-421.:411 (comb. nov.); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. Descriptions and records of bees. - XII. The Annals and Magazine of Natural History ser. 7: v. 18 (103):69-75. (distribution); Crawford, 1915Crawford, J.C. 1915. Descriptions of new Hymenoptera, NO. 9. Proceedings of the United States National Museum 48 (No. 2087):577-587. (distribution); Cockerell, 1926Cockerell, T.D.A. 1926. Some bees in the collection of the California Academy of Sciences. The Pan-Pacific Entomologist 3 (2):80-90. (distribution); Hurd & Linsley, 1976Hurd, P.D. Jr. & E.G. Linsley 1976. The bee family Oxaeidae with a revision of the North American species (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 220:1-75. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Ruíz-Cancino & Coronado-Blanco, 2002Ruíz-Cancino, E. & J.M. Coronado-Blanco 2002. Artrópodos terrestres de los estados de Tamaulipas y Nuevo León, México. Serie Publicaciones Cientificas No. 4:1-376. (distribution); Yáñez-Ordóñez & Hinojosa-Díaz, 2004Yáñez-Ordóñez, O. & I. Hinojosa-Díaz 2004. La colección himenopterológica (Insecta) del Museo de Zoología Alfonso L. Herrera de la Facultad de Ciencias, UNAM, México. Acta Zoológica Mexicana (nueva serie) 20 (1):167-197. (distribution); Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution); 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).
Oxaea tristis Gribodo, 1894:278, ♂. 2 ♂♂, Durango (Messico) (Coll. Gribodo); Hurd & Linsley, 1976Hurd, P.D. Jr. & E.G. Linsley 1976. The bee family Oxaeidae with a revision of the North American species (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 220:1-75.:29, Type (Museo Civico di Storia Naturale, 'Giacomo Doria,' Genoa, Italy). Synonymized with Protoxaea gloriosa (Fox, 1893) by Hurd & Linsley, 1976Hurd, P.D. Jr. & E.G. Linsley 1976. The bee family Oxaeidae with a revision of the North American species (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 220:1-75.:29. - Friese, 1898Friese, H. 1898. Monographie der Bienengattungen, Megacilissa, Caupolicana, Diphaglossa und Oxaea. Ann. KK Naturh. Hof. 13 (1):59-86. (distribution); Cockerell, 1899Cockerell, T.D.A. 1899. Catálogo de las Abejas de Mexico. Biblioteca Agricola de las Secretaria de Fomento, Mexico, 1-20. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. Descriptions and records of bees. - XII. The Annals and Magazine of Natural History ser. 7: v. 18 (103):69-75. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1771 ( listed as synonym of Protoxaea gloriosa (Fox, 1893)).
Protoxaea gloriosa pallida Cockerell, 1934:153, Hurd & Linsley, 1976Hurd, P.D. Jr. & E.G. Linsley 1976. The bee family Oxaeidae with a revision of the North American species (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 220:1-75.:29, Type (American Museum of Natural History, New York). Synonymized with Protoxaea gloriosa (Fox, 1893) by Hurd & Linsley, 1976Hurd, P.D. Jr. & E.G. Linsley 1976. The bee family Oxaeidae with a revision of the North American species (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 220:1-75.:29. - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1771 ( listed as synonym of Protoxaea gloriosa (Fox, 1893)).