Exomalopsis solidaginis Cockerell, 1898:452, ♂. ♂, Las Cruces, N. M., Aug. 27, 1898 (leg. C.H.T. Townsend). - Timberlake, 1947Timberlake, P.H. 1947. A revision of the species of Exomalopsis inhabiting the United States (Hymenoptera, Apoidea). Journal of the New York Entomological Society 55 (2):85-106. (distribution); Timberlake, 1980Timberlake, P.H. 1980. Review of North American Exomalopsis (Hymenoptera, Anthophoridae). University of California press, LTD, London, England. 158 pp. (distribution); 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); 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).
Exomalopsis verbesinaæ Cockerell, 1904:21, ♀. ♀, Mesilla Park, New Mexico, June 19 (leg. Clarence Rhodes). Synonymized with Exomalopsis solidaginis Cockerell, 1898 by Timberlake, 1947Timberlake, P.H. 1947. A revision of the species of Exomalopsis inhabiting the United States (Hymenoptera, Apoidea). Journal of the New York Entomological Society 55 (2):85-106.:91.