Megachile nigripennis Spinola, 1841:143, ♀. Holotype ♀, Cayenne (leg. M. Leprieur); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♀ (IZU, Torino); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♀ (IZU, Torino). - Smith, 1853Smith, F. 1853. Catalogue of Hymenopterous Insects in the Collection of the British Museum. Part I. Andrenidae and Apidae. London. 197 pp, 6 pl. (distribution); Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Friese, 1916Friese, H. 1916. Zur Bienenfauna von Costa Rica. Stettiner Entomologische Zeitung 77:287-348. (distribution); Maes, 1993Maes, J.-M. 1993. Catalogo de los Apoidea (Hymenoptera) de Nicaragua. Revista Nicaraguense de Entomologia 26:11-30. (distribution); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97. (distribution); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127. (distribution); Imperatriz-Fonseca et al., 2011Imperatriz-Fonseca, V.L., I. Alves-dos-Santos, P. Souza Santos-Filho, W. Engels, M. Ramalho, W. Wilms, J.B Vicentin Aguilar, C.A. Pinheiro-Machado, D. Araújo Alves & A. Matos Peixoto Kleinert 2011. Checklist of bees and honey plants from São Paulo State, Brazil. Biota Neotropica 11 (1a):631-655. (distribution); Silvestre et al., 2014Silvestre, R., M.F. Demétrio, B.M. Trad, F. Varussa & O. Lima 2014. Diversity and distribution of Hymenoptera Aculeata in Midwestern Brazilian dry forests. In: Greer, F.E. (Ed.). Dry Forests. 29-80. (distribution); Oliveira Lima & Silvestre, 2017Oliveira Lima, F.V. de & R. Silvestre 2017. Abelhas (Hymenoptera, Apidae sensu lato) do Estado de Mato Grosso do Sul, Brasil. Iheringia Série Zoologia 107 (supl.):1-14. (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).
Megachile hypocrita Smith, 1853:184, ♀. ♀, Para (H. W. Bates, Esq.); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:22, Type ♀ (BMNH, 17a2460); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♀ (NHML, 17a2460); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♀ (NHML, 17a2460). Synonymized with Megachile nigripennis Spinola, 1841 by Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:22. - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61 ( listed as synonym of Megachile nigripennis Spinola, 1841).
Megachile totonaca Cresson, 1878:117, ♀. 2 ♀♀, Mexico (leg. Sumichrast); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:22, Type ♀ (ANSP, 2422); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♀ (ANSP, 2422); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♀ (ANSP, 2422). Synonymized with Megachile nigripennis Spinola, 1841 by Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:22. - Cresson, 1879Cresson, E.T. 1879. Catalogue of North American Apidae. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 7:215-232. (distribution); Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (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, 1923Cockerell, T.D.A. 1923. Some bees from Victoria, Mexico. Proceedings of the United States National Museum 63 (Art. 8):1-5. (distribution); Mitchell, 1930Mitchell, T.B. 1930. A contribution to the knowledge of Neotropical Megachile with descriptions of new species (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 56 (3):155-305. (distribution); Schwarz, 1934Schwarz, H.F. 1934. The solitary bees of Barro Colorado Island, Canal Zone. American Museum Novitates 722:1-24. (distribution); Ayala, 1988Ayala, R. 1988. Abejas silvestres (Hymenoptera: Apoidea) de Chamela, Jalisco, México. Folia Entomológica Mexicana 77:395-493. (distribution); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (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); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52 ( listed as synonym of Megachile nigripennis Spinola, 1841); 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); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61 ( listed as synonym of Megachile nigripennis Spinola, 1841); 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).
Megachile nudiventris Schrottky, 1902:439 - Mitchell, 1930Mitchell, T.B. 1930. A contribution to the knowledge of Neotropical Megachile with descriptions of new species (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 56 (3):155-305.:187 ( listed as synonym of Megachile proserpina Schrottky, 1908).
Megachile proserpina Schrottky, 1908:233, Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♀ (MZSP ?); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♀ (MZSP ?). - Mitchell, 1930Mitchell, T.B. 1930. A contribution to the knowledge of Neotropical Megachile with descriptions of new species (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 56 (3):155-305. (distribution); Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176. (distribution); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution), 22 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61 ( listed as synonym of Megachile nigripennis Spinola, 1841).
Megachile infecta Vachal, 1908:226, Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♂ (MNHN); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♂ (MNHN); Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:31, Holotype ♂ (MNHN). - Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61 ( listed as synonym of Megachile nigripennis Spinola, 1841); Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:31 ( listed as synonym of Megachile strenua Smith, 1879).
Megachile fumicosta Strand, 1910:526, 537, Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♂ (unknown); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♂ (unknown). - Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution), 22 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61 ( listed as synonym of Megachile nigripennis Spinola, 1841).
Megachile vernoniae Schrottky, 1913:248, Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52, Type ♂ (MZSP unknown); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61, Type ♂ (MZSP Unknown). - Mitchell, 1930Mitchell, T.B. 1930. A contribution to the knowledge of Neotropical Megachile with descriptions of new species (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 56 (3):155-305. (distribution); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution), 22 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:52 ( listed as synonym of Megachile nigripennis Spinola, 1841); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:61 ( listed as synonym of Megachile nigripennis Spinola, 1841).