Megalopta idalia Smith, 1853:84, ♂♀.Brazil; banks of the Amazon and Para (B.M.); Moure, 1958Moure, J.S. 1958. On the species of Megalopta described by F. Smith (Hymenoptera, Apoidea). Journal of the New York Entomological Society 66:179-190.:181, Type ♀ (British Museum, 17.a.1276). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Cockerell, 1900Cockerell, T.D.A. 1900. Descriptions of new bees collected by Mr. H.H. Smith in Brazil. I. Proceedings of the Academy of Natural Sciences of Philadelphia 52:356-377. (distribution); Cockerell, 1912Cockerell, T.D.A. 1912. New bees from Brazil. Psyche 19 (2):41-61. (distribution); Cockerell, 1916Cockerell, T.D.A. 1916. Some bees from British Guyana. Occ. Papers Mus. Zool. Univ. of Michigan 24:1-3. (distribution); Cockerell, 1919Cockerell, T.D.A. 1919. Bees in the collection of the United States National Museum. Proceedings of the United States National Museum 55 (2264):167-221. (distribution); Cockerell, 1923Cockerell, T.D.A. 1923. Some bees from British Guiana. The Annals and Magazine of Natural History ser. 9: v. 11 (64):442-459. (distribution); 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); Engel, 2000Engel, M.S. 2000. Classification of the bee tribe Augochlorini (Hymenoptera: Halictidae). Bull. Amer. Mus. Nat. Hist 250:1-89.:40 ( listed as synonym of Halictus amoenus Spinola, 1853); Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637 ( listed as synonym of Megalopta amoena (Spinola, 1853)).
Halictus amoenus Spinola, 1853:85, Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Holotype ♂ (MSNT). - As Megalopta amoena: - Smith-Pardo, 2003Smith-Pardo, A.H. 2003. A preliminary account of the bees of Colombia (Hymenoptera: Apoidea): present knowledge and future directions. Journal of the Kansas Entomological Society 76 (2):335-341. (distribution); Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674. (distribution).
Halictus ochrias Vachal, 1904:115, Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:38, Holotype ♂ (MNHN); Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Holotype ♂, examined (MNHP). - As Megalopta ochrias: - Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637 ( listed as synonym of Megalopta amoena (Spinola, 1853)).
Halictus argoides Vachal, 1904:114, Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:17, Holotype ♂ (MNHN); Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Holotype ♂ (MNHP). - Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:17 ( listed as synonym of Megalopta amoena (Spinola, 1853)). - As Megalopta argoides: - Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637 ( listed as synonym of Megalopta amoena (Spinola, 1853)).
Megalopta vigilans Cockerell, 1923:1, ♂. Holotype ♂, Exact locality unknown. The unique specimen was collected by Mr. Austin Curtis at one of the harbors of the Caribbean Sea, perhaps on the coast of Venezuela.; Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Holotype ♂, examined (AMNH). Synonymized with Megalopta amoena (Spinola, 1853) by Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637. - Cockerell, 1923Cockerell, T.D.A. 1923. Two nocturnal bees and a minute Perdita. American Museum Novitates 66:1-4. (distribution).
Megalopta ecuadoria Friese, 1926:127, ♂♀.Guayaquil, Ecuador (leg. v. Buchwald); 2 ♀, Columbien (Mus. Stettin, leg. Pehlke), Lectotype ♀, examined (ZMHB), designated by Engel, 2006Engel, M.S. 2006. A new nocturnal bee of the genus Megalopta, with notes on other Central American species (Hymenoptera: Halictidae). Mitteilungen des Internationalen Entomologischen Vereins 31 (1-2):37-44.:43; Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Lectotype ♀, examined (ZMB). Synonymized with Megalopta centralis Friese, 1926 by Engel, 2006Engel, M.S. 2006. A new nocturnal bee of the genus Megalopta, with notes on other Central American species (Hymenoptera: Halictidae). Mitteilungen des Internationalen Entomologischen Vereins 31 (1-2):37-44.:43. - Michener, 1954Michener, C.D. 1954. Bees of Panamá. Bulletin of the American Museum of Natural History 104 (1):1-176. (distribution); Smith-Pardo, 2003Smith-Pardo, A.H. 2003. A preliminary account of the bees of Colombia (Hymenoptera: Apoidea): present knowledge and future directions. Journal of the Kansas Entomological Society 76 (2):335-341. (distribution); Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637 ( listed as synonym of Megalopta amoena (Spinola, 1853)).
Megalopta centralis Friese, 1926:128, ♂♀.Guatemala (leg. Stoll);Sarapiqui und San José in Costa Rica (leg. Schmidt), Lectotype ♂, examined (ZMHB), designated by Engel, 2006Engel, M.S. 2006. A new nocturnal bee of the genus Megalopta, with notes on other Central American species (Hymenoptera: Halictidae). Mitteilungen des Internationalen Entomologischen Vereins 31 (1-2):37-44.:43; Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Lectotype ♂, examined (ZMB). - Maes, 1993Maes, J.-M. 1993. Catalogo de los Apoidea (Hymenoptera) de Nicaragua. Revista Nicaraguense de Entomologia 26:11-30. (distribution); Gonzalez et al., 2010Gonzalez, V.H., T. Griswold & R. Ayala 2010. Two new species of nocturnal bees of the genus Megalopta (Hymenoptera: Halictidae) with keys to species. Revista de Biología Tropical (International Journal of Tropical Biology and Conservation) 58 (1):255-263. (distribution); Hook et al., 2014Hook, A.W., J.L. Neff, M.S. Engel & H. Court 2014. The Apoidea (Hymenoptera) Fauna of Little Tobago Island, West Indies. Journal of the Kansas Entomological Society 87 (2):242-244. (distribution); Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637 ( listed as synonym of Megalopta amoena (Spinola, 1853)).
Megalopta gibbosa Frriese, 1926:128, Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637, Holotype ♂, examined (ZMB). Synonymized with Megalopta amoena (Spinola, 1853) by Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637.
Megalopta lecointei Frriese, 1926:122, Lectotype ♀, examined (ZMB), designated by Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637. Synonymized with Megalopta amoena (Spinola, 1853) by Santos & Melo, 2015Santos, L.M. & G.A.R. Melo 2015. Updating the taxonomy of the bee genus Megalopta (Hymenoptera: Apidae, Augochlorini) including revision of the Brazilian species. Journal of Natural History 49 (11-12):575-674.:637.