Megatchile brevis Say, 1837:407, ♂♀. ♂, ♀, Indiana; Bzdyk, 2012Bzdyk, E.L. 2012. A revision of the Megachile subgenus Litomegachile Mitchell with an illustrated key and description of a new species (Hymenoptera, Megachilidae, Megachilini). ZooKeys 221:31-61.:37, Syntypes ♂, ♀ (destroyed).Megatchile brevis Say, 1837:407, ♂♀. ♂, ♀, Indiana; Bzdyk, 2012Bzdyk, E.L. 2012. A revision of the Megachile subgenus Litomegachile Mitchell with an illustrated key and description of a new species (Hymenoptera, Megachilidae, Megachilini). ZooKeys 221:31-61.:37, Syntypes ♂, ♀ (destroyed). - As Megachile brevis: - Cresson, 1872Cresson, E.T. 1872. Hymenoptera Texana. Transactions of the American Entomological Society 4:153-292. (distribution); Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356. (distribution); Cockerell, 1900Cockerell, T.D.A. 1900. The New Mexico bees of the genus Megachile and a new Andrena. The Annals and Magazine of Natural History ser. 7: v. 6:7-20. (distribution); Cockerell, 1903Cockerell, T.D.A. 1903. A catalogue of the bees of California. Psyche 10:74-78. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1907Cockerell, T.D.A. 1907. The bees of Boulder County, Colorado. University of Colorado Studies 4:239-259. (distribution); Lovell & Cockerell, 1907Lovell, J.H. & Cockerell, T.D.A. 1907. The Megachilidae of southern Maine. Psyche 14 (1):15-21. (distribution); Cockerell, 1911Cockerell, T.D.A. 1911. Records of bees. The Canadian Entomologist 43 (11):389-391. (distribution); Mitchell, 1935Mitchell, T.B. 1935. A revision of the genus Megachile in the Nearctic Region. Part II. Morphology of the male sternites and genital armature and the taxonomy of the subgenera Litomegachile, Neomegachile and Cressoniella (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 61 (1):1-44. (distribution); Mayer et al., 2000Mayer, D.F., E.R. Miliczky, B.F. Finnigan & C.A. Johansen 2000. The bee fauna (Hymenoptera: Apoidea) of southeastern Washington. Journal of the Entomological Society of British Columbia 97:25-32. (distribution); Bzdyk, 2012Bzdyk, E.L. 2012. A revision of the Megachile subgenus Litomegachile Mitchell with an illustrated key and description of a new species (Hymenoptera, Megachilidae, Megachilini). ZooKeys 221:31-61. (distribution); Owens et al., 2018Owens, B.E., L. Allain, E.C. van Gorder, J.L. Bossart & C.E. Carlton 2018. The bees (Hymenoptera: Apoidea) of Louisiana: An updated, annotated checklist. Proceedings of the Entomological Society of Washington 120 (2):272-307. (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).
Megachile perbrevis Cresson, 1878:127, ♂. 3 ♂♂, Texas (leg. Belfrage); Bzdyk, 2012Bzdyk, E.L. 2012. A revision of the Megachile subgenus Litomegachile Mitchell with an illustrated key and description of a new species (Hymenoptera, Megachilidae, Megachilini). ZooKeys 221:31-61.:37, Lectotype ♂ (USNM). - 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, 1914Cockerell, T.D.A. 1914. Descriptions and records of bees. - LVIII. The Annals and Magazine of Natural History ser. 8: v. 13 (76):424-433. (distribution); Mitchell, 1935Mitchell, T.B. 1935. A revision of the genus Megachile in the Nearctic Region. Part II. Morphology of the male sternites and genital armature and the taxonomy of the subgenera Litomegachile, Neomegachile and Cressoniella (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 61 (1):1-44.:14 ( listed as synonym of Megachile brevis Say, 1837); Bzdyk, 2012Bzdyk, E.L. 2012. A revision of the Megachile subgenus Litomegachile Mitchell with an illustrated key and description of a new species (Hymenoptera, Megachilidae, Megachilini). ZooKeys 221:31-61.:37 ( listed as synonym of Megachile brevis Say, 1837).