Synhalonia albicans Provancher, 1896:27 - As Anthophorula albicans: - Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution). - As Exomalopsis albicans: - 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); 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).
Diadasiella coquilletti Ashmead, 1899:64 - Michener & Moure, 1957Michener, C.D. & J.S. Moure 1957. A study of the classification of the more primitive non-parasitic Anthophorine bees (Hymenoptera, Apoidea). Bulletin of the American Museum of Natural History 112:395-452.:432 ( listed as synonym of Synhalonia albicans Provancher, 1896); Timberlake, 1980Timberlake, P.H. 1980. Review of North American Exomalopsis (Hymenoptera, Anthophoridae). University of California press, LTD, London, England. 158 pp.:10 ( listed as synonym of Exomalopsis albicans (Provancher, 1896)).