Agapostemon semimelleus Cockerell, 1900:376, ♂♀. ♂♀, Chapada, January (leg. H.H. Smith); Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525, Lectotype ♂ (Carnegie Museum, Pittsburgh). - Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590. (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); Imperatriz-Fonseca et al., 2011Imperatriz-Fonseca, V.L., I. Alves-dos-Santos, P. Souza Santos-Filho, W. Engels, M. Ramalho, W. Wilms, J.B Vicentin Aguilar, C.A. Pinheiro-Machado, D. Araújo Alves & A. Matos Peixoto Kleinert 2011. Checklist of bees and honey plants from São Paulo State, Brazil. Biota Neotropica 11 (1a):631-655. (distribution).
Agapostemon castaneus Schrottky, 1902 Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525, Type ♀ ?, According to J.S. Moure (pers. Comm.) the types of most Holmberg species have been destroyed by dermestids (Departamento de Zoologia, São Paulo?). - Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525 ( listed as synonym of Agapostemon semimelleus Cockerell, 1900).
Halictus andensis Vachal, 1903 Synonymized with Agapostemon semimelleus Cockerell, 1900 by Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525.
Agapostemon coryliventris Holmberg, 1903 Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525, Type ♀, According to J.S. Moure (pers. Comm.) the types of most Holmberg species have been destroyed by dermestids. - Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525 ( listed as synonym of Agapostemon semimelleus Cockerell, 1900).
Agapostemon multicolor Holmberg, 1903 Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525, Type ♂. - Roberts, 1972Roberts, R.B. 1972. Revision of the bee genus Agapostemon (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 49 (9):437-590.:525 ( listed as synonym of Agapostemon semimelleus Cockerell, 1900).