Nomia caelestina Westwood, 1875:220, Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384, Holotype ♂ (OX). - 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). - As Agapostemon caelestina: - Cockerell, 1910Cockerell, T.D.A. 1910. The North American bees of the genus Nomia. Proceedings of the United States National Museum 38:289-298.:298 (comb. nov.). - As Nomia coelestina:
Paragapostemon coelestinos (Westwood, 1875) - Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392. (distribution); Estrada de Léon & Ayala Barajas, 1995Estrada de Léon, M. & R. Ayala Barajas 1995. Abejas silvestres (Hymenoptera: Apoidea) de la Sierra del Tigre, Jalisco. Apicultura Moderna 7:12-24. (distribution); Yáñez-Ordóñez & Hinojosa-Díaz, 2004Yáñez-Ordóñez, O. & I. Hinojosa-Díaz 2004. La colección himenopterológica (Insecta) del Museo de Zoología Alfonso L. Herrera de la Facultad de Ciencias, UNAM, México. Acta Zoológica Mexicana (nueva serie) 20 (1):167-197. (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 Paragapostemon coelestinus: - Ruíz-Cancino & Coronado-Blanco, 2002Ruíz-Cancino, E. & J.M. Coronado-Blanco 2002. Artrópodos terrestres de los estados de Tamaulipas y Nuevo León, México. Serie Publicaciones Cientificas No. 4:1-376. (distribution).
Agapostemon bruneri Crawford, 1901:160, Muma, 1952Muma, M.H. 1952. Insect types in the collections of the University of Nebraska State Museum. Bulletin of the University of Nebraska State Museum 3 (8):1-35.:15, Types ♂ ♀ (University of Nebraska State Museum), Lectotype ♂ (NU), designated by Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384. Synonymized with Paragapostemon coelestinos (Westwood, 1875) by Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384.
Nomia cillaba Cameron, 1902:376, Sandhouse, 1936Sandhouse, G.A. 1936. The bees of the genus Agapostemon (Hymenoptera: Apoidea) occuring in the United States. Journal of the Washington Academy of Sciences 26 (2):70-83.:80, Type (British Museum), Lectotype ♂ (BMNH, No. 17.a.1220a), designated by Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384. Synonymized with Agapostemon cockerelli Crawford, 1901 by Sandhouse, 1936Sandhouse, G.A. 1936. The bees of the genus Agapostemon (Hymenoptera: Apoidea) occuring in the United States. Journal of the Washington Academy of Sciences 26 (2):70-83.:80. - Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384 ( listed as synonym of Paragapostemon coelestinos (Westwood, 1875)). - As Agapostemon cillaba: - Cockerell, 1910Cockerell, T.D.A. 1910. The North American bees of the genus Nomia. Proceedings of the United States National Museum 38:289-298.:298 (comb. nov.).
Halictus podager Vachal, 1903:96, Lectotype ♂ (MNHN), designated by Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384; Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:40, 3♀ (MNHN). Synonymized with Paragapostemon coelestinos (Westwood, 1875) by Roberts & Brooks, 1987Roberts, R.B. & R.W. Brooks 1987. Agapostemonine bees of Mesoamerica (Hymenoptera: Halictidae). The University of Kansas Science Bulletin 53 (7):357-392.:384. - Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:40 ( listed as synonym of Paragapostemon coelestinus (Westwood, 1875)).