Halictus sodalis Vachal, 1904:114, 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.:640, Holotype ♀ (MNHP). - As Megalopta sodalis: - Bodkin, 1918Bodkin, G.E. 1918. Notes on some British Guiana Hymenoptera (exclusive of the Formicidae). The Transactions of the Entomological Society of London 1917:297-321, pls. XXI-XXIII. (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); 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 fornix Vachal, 1904:114, 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.:640, Holotype ♀ (MNHP). Synonymized with Megalopta sodalis (Vachal, 1904) 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.:640.
Halictus aethautis Vachal, 1904:115, 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.:640, Holotype ♂ (MNHP). - 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.:640 ( listed as synonym of Megalopta sodalis (Vachal, 1904)).