Bombus velutinus Illiger, 1806:175, sex not indicated.Brasilien. - Handlirsch, 1888Handlirsch, A. 1888. Die Hummelsammlung des k. k. naturhistorischen Hofmuseums. Annalen des Naturhistorischen Museums in Wien 3:209-250.:240 ( listed as synonym of Bombus cayennensis (Fabricius, 1798)), 241 ( listed as synonym of Bombus carbonarius Handlirsch, 1888); Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Part II - Species south of the United States. Transactions of the American Entomological Society 39 (2):73-200.:110 ( listed as synonym of Bombus kohli Cockerell, 1906); Friese, 1916Friese, H. 1916. Zur Bienenfauna von Costa Rica. Stettiner Entomologische Zeitung 77:287-348.:298 ( listed as synonym of Bombus cayennensis mexicanus Cresson, 1878); Alfken, 1933Alfken, J.D. 1933. Ergebnisse einer zoologischen Sammelreise nach Brasilien, inbesondere in das Amazonasgebeit, ausgeführt von Dr. H. Zerny. IX Teil. Hymenoptera: Apidae. Annalen des Naturhistorischen Museums in Wien 45:303-307. (distribution); Alfken, 1935-1936Alfken, J.D. 1935-1936. Ueber eine Bienenausbeute aus Venezuela. Veröffentlichungen aus dem Übersee-Museum Bremen 1:316-320. (distribution).
Bombus mexicanus Cresson, 1878:187, ♀xw. 12 ♀xw, Mexico (American Entomology Society, leg. Sumichrast). - 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); Handlirsch, 1888Handlirsch, A. 1888. Die Hummelsammlung des k. k. naturhistorischen Hofmuseums. Annalen des Naturhistorischen Museums in Wien 3:209-250.:241 ( listed as synonym of Bombus cayennensis (Fabricius, 1798)); 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); Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Transactions of the American Entomological Society 38 (3/4):177-486. (distribution); Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Part II - Species south of the United States. Transactions of the American Entomological Society 39 (2):73-200. (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); Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176. (distribution); Maes, 1993Maes, J.-M. 1993. Catalogo de los Apoidea (Hymenoptera) de Nicaragua. Revista Nicaraguense de Entomologia 26:11-30. (distribution); Abrahamovich & Díaz, 2002Abrahamovich, A.H. & N.B. Díaz 2002. Bumble bees of the Neotropical Region (Hymenoptera: Apidae). Biota Colombiana 3 (2):199-214. (distribution); Dardón et al., 2016Dardón, M.J., C.L. Yurrita & M. Vásquez 2016. Catalogue of the bees of the genus Bombus Latreille, 1802 (Hymenoptera: Apoidea: Apidae) in Guatemala. Revista Cientifica 26 (1):9-19. (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); Dardón et al., 2020Dardón, M.J., C.L. Yurrita, P. Landaverde-González P. & A.R. Vásquez M. 2020. Rediscovering the diversity of Guatemalan bumble bees (Hymenoptera: Apoidea: Bombus Latreille, 1802). International Journal of Scientific Research in Biological Sciences 7 (2):1-14. (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 Bombus cayennensis mexicanus:
Bombus unifasciatus Smith, 1879:133, ♂♀xw. ♂, ♀, xw, Guatemala, at an elevation of 5000 feet (British Museum); ♂, ♀, xw, San Francisco, 4500 feet (British Museum); ♂, ♀, xw, Irazu, 6000-7000 feet (British Museum). Synonymized with Bombus mexicanus Cresson, 1878 by Meade-Waldo, 1916Meade-Waldo, G. 1916. Notes on the Apidae (Hymenoptera) in the collecition of the British Museum, with description of new species. The Annals and Magazine of Natural History ser. 8: v. 17:448-470.:470. - Handlirsch, 1888Handlirsch, A. 1888. Die Hummelsammlung des k. k. naturhistorischen Hofmuseums. Annalen des Naturhistorischen Museums in Wien 3:209-250.:241 ( listed as synonym of Bombus cayennensis (Fabricius, 1798)); Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Part II - Species south of the United States. Transactions of the American Entomological Society 39 (2):73-200.:123 ( listed as synonym of Bombus medius Cresson, 1863), 128 ( listed as synonym of Bombus mexicanus Cresson, 1878); Cockerell, 1913Cockerell, T.D.A. 1913. Descriptions and records of bees. - XLIX. The Annals and Magazine of Natural History ser. 8: v. 11 (62):185-195. (distribution); Lutz & Cockerell, 1920Lutz, F.E. & T.D.A. Cockerell 1920. Notes on the distribution and bibliography of North American bees of the families, Apidae, Meliponidae, Bombidae, Euglossidae, and Anthophoridae. Bull. Amer. Mus. Nat. Hist 42 (15):491-641. (distribution), 523 ( listed as synonym of Bombus medius Cresson, 1863); Cockerell, 1949Cockerell, T.D.A. 1949. Bees from Central America, principally Honduras. Proceedings of the United States National Museum 98 (No. 3233):429-490.:487 ( listed as synonym of Bombus mexicanus Cresson, 1878); Maes, 1993Maes, J.-M. 1993. Catalogo de los Apoidea (Hymenoptera) de Nicaragua. Revista Nicaraguense de Entomologia 26:11-30. ( listed as synonym of Bombus mexicanus Cresson, 1878); Dardón et al., 2016Dardón, M.J., C.L. Yurrita & M. Vásquez 2016. Catalogue of the bees of the genus Bombus Latreille, 1802 (Hymenoptera: Apoidea: Apidae) in Guatemala. Revista Cientifica 26 (1):9-19.:16 ( listed as synonym of Bombus mexicanus Cresson, 1878).
Bombus mexicanus adani Cockerell, 1949:488, xw. Holotype xw, Uyaca Mountain, February 9, 1947 (U.S.N.M., No. 58899, leg. W. P. Cockerell). - Dardón et al., 2016Dardón, M.J., C.L. Yurrita & M. Vásquez 2016. Catalogue of the bees of the genus Bombus Latreille, 1802 (Hymenoptera: Apoidea: Apidae) in Guatemala. Revista Cientifica 26 (1):9-19.:16 ( listed as synonym of Bombus mexicanus Cresson, 1878).