Megachile otomita Cresson, 1878:123, ♂. 4 ♂♂, Mexico (leg. Sumichrast); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:28, Type ♂, examined (ANSP, 2417); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:29, Type ♂, examined (ANSP, 2417); Hinojosa-Díaz et al., 2012Hinojosa-Díaz, I.A., V.H. Gonzalez, R. Ayala, J. Mérida, P. Sagot & M.S. Engel 2012. New orchid and leaf-cutter bee gynandromorphs, with an updated review (Hymenoptera, Apoidea). Zoosyst. Evol. 88 (2):205-214.:208, Lectotype ♂ (ANSP). - 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); 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); Cockerell, 1949Cockerell, T.D.A. 1949. Bees from Central America, principally Honduras. Proceedings of the United States National Museum 98 (No. 3233):429-490. (distribution); Vergara & Ayala, 2002Vergara, C.H. & R. Ayala 2002. Diversity, Phenology and Biogeography of the bees (Hymenoptera: Apoidea) of Zapotitlán de las Salinas, Puebla, Mexico. Journal of the Kansas Entomological Society 75 (1):16-30. (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. (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); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127. (distribution); Hinojosa-Díaz et al., 2012Hinojosa-Díaz, I.A., V.H. Gonzalez, R. Ayala, J. Mérida, P. Sagot & M.S. Engel 2012. New orchid and leaf-cutter bee gynandromorphs, with an updated review (Hymenoptera, Apoidea). Zoosyst. Evol. 88 (2):205-214. (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); 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). - As Chalicodoma otomita: - Snelling, 1990Snelling, R.R. 1990. A review of the native North American bees of the genus Chalicodoma (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 421:1-39. (distribution). - As Chelostomoides otomita: - Guevara et al., 2022Guevara, D.A., R. Ospina-Torres, V.H. Gonzalez 2022. New records of megachilid bees (Hymenoptera: Megachilidae) for Colombia. Revista Peruana de biología 29 (4):1-6. (distribution).
Megachile squamosa Friese, 1916:297, 340, ♂♀. 1 ♂, Popayan (Columbia), 11. Mai 1908 (leg. Fassl); 2 ♀♀, San José (leg. Schmidt); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:28, Type ♀ (unknown); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:28, Type ♂ (unknown); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:29, Types ♂, ♀ (unknown); Hinojosa-Díaz et al., 2012Hinojosa-Díaz, I.A., V.H. Gonzalez, R. Ayala, J. Mérida, P. Sagot & M.S. Engel 2012. New orchid and leaf-cutter bee gynandromorphs, with an updated review (Hymenoptera, Apoidea). Zoosyst. Evol. 88 (2):205-214.:208, Syntypes ♀, ♂ (ZMB). - Friese, 1921Friese, H. 1921. Nachtrag zur Bienenfauna von Costa Rica. Stettiner Entomologische Zeitung 82:74-98. (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.:176 ( listed as synonym of Megachile otomita Cresson, 1878); Cockerell, 1932Cockerell, T.D.A. 1932. Bees (Hymenoptera, Apoidea) collected at Chichen Itzá, Yucatan, by the Harvard expeditions of 1929-1930. Bulletin of the Brooklyn Entomological Society 27:9-17. (distribution); Snelling, 1990Snelling, R.R. 1990. A review of the native North American bees of the genus Chalicodoma (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 421:1-39.:19 ( listed as synonym of Chalicodoma otomita (Cresson, 1878)); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:28 ( listed as synonym of Megachile otomita Cresson, 1878); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:29 ( listed as synonym of Megachile otomita Cresson, 1878); Hinojosa-Díaz et al., 2012Hinojosa-Díaz, I.A., V.H. Gonzalez, R. Ayala, J. Mérida, P. Sagot & M.S. Engel 2012. New orchid and leaf-cutter bee gynandromorphs, with an updated review (Hymenoptera, Apoidea). Zoosyst. Evol. 88 (2):205-214.:208 ( listed as synonym of Megachile otomita Cresson, 1878).
Megachile knabi Cockerell, 1919:215, ♂. Holotype ♂, Cordoba, Mexico, De. 20, 1907 (U.S.N.M., No. 21685, leg. F. Knab); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:28, Type ♂, examined (USNM, 21685); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:29, Types ♂, examined (USNM, 21685); Hinojosa-Díaz et al., 2012Hinojosa-Díaz, I.A., V.H. Gonzalez, R. Ayala, J. Mérida, P. Sagot & M.S. Engel 2012. New orchid and leaf-cutter bee gynandromorphs, with an updated review (Hymenoptera, Apoidea). Zoosyst. Evol. 88 (2):205-214.:208, Holotype ♂ (USNM). Synonymized with Megachile squamosa Friese, 1916 by Cockerell, 1932Cockerell, T.D.A. 1932. Bees (Hymenoptera, Apoidea) collected at Chichen Itzá, Yucatan, by the Harvard expeditions of 1929-1930. Bulletin of the Brooklyn Entomological Society 27:9-17.:13. - Cockerell, 1949Cockerell, T.D.A. 1949. Bees from Central America, principally Honduras. Proceedings of the United States National Museum 98 (No. 3233):429-490. (distribution); Snelling, 1990Snelling, R.R. 1990. A review of the native North American bees of the genus Chalicodoma (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 421:1-39.:19 ( listed as synonym of Chalicodoma otomita (Cresson, 1878)); Raw, 2004Raw, A. 2004. Leafcutter and Mason Bees: a biological catalogue of the genus Megachile of the Neotropics. :1-97.:28 ( listed as synonym of Megachile otomita Cresson, 1878); Raw, 2007Raw, A. 2007. An annotated catalogue of the leafcutter and mason bees (genus Megachile) of the Neotropics. Zootaxa 1601:1-127.:29 ( listed as synonym of Megachile otomita Cresson, 1878); Hinojosa-Díaz et al., 2012Hinojosa-Díaz, I.A., V.H. Gonzalez, R. Ayala, J. Mérida, P. Sagot & M.S. Engel 2012. New orchid and leaf-cutter bee gynandromorphs, with an updated review (Hymenoptera, Apoidea). Zoosyst. Evol. 88 (2):205-214.:208 ( listed as synonym of Megachile otomita Cresson, 1878); 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).