Sphecodes dichroa Smith, 1853:38, ♂♀. ♂, ♀, United States (B.M., leg. E. Doubleday, Esq.). - Cresson, 1872Cresson, E.T. 1872. Hymenoptera Texana. Transactions of the American Entomological Society 4:153-292. (distribution). - As Sphecodes dichrous: - Cockerell, 1899Cockerell, T.D.A. 1899. Notes on american bees (Concluded from p. 129). The Entomologist 32:154-159. (distribution); Lovell & Cockerell, 1907Lovell, J.H. & Cockerell, T.D.A. 1907. The Sphecodidae of southern Maine. Psyche 14 (5):101-110. (distribution); Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538. (distribution); Owens et al., 2018Owens, B.E., L. Allain, E.C. van Gorder, J.L. Bossart & C.E. Carlton 2018. The bees (Hymenoptera: Apoidea) of Louisiana: An updated, annotated checklist. Proceedings of the Entomological Society of Washington 120 (2):272-307. (distribution).
Sphecodes arvensis Patton, 1880:230 - Robertson, 1895Robertson, C. 1895. Notes on bees, with descriptions of new species. Transactions of the American Entomological Society 22 (2):115-128. (distribution); Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356.:316 ( listed as synonym of Sphecodes dichrous Smith, 1853); Cockerell, 1911Cockerell, T.D.A. 1911. Records of bees. The Canadian Entomologist 43 (11):389-391. (distribution); Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538.:486 ( listed as synonym of Sphecodes dichrous Smith, 1853).
Halictus scabrosus Provancher, 1882:199 (key), 200, ♂.Chicoutimi. - Robertson, 1897Robertson, C. 1897. North American bees - Descriptions and synonyms. Transactions of the Academy of Science of St. Louis 7 (14):315-356.:316 ( listed as synonym of Sphecodes dichrous Smith, 1853); Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538.:486 ( listed as synonym of Sphecodes dichrous Smith, 1853).
Sphecodes lautus Lovell & Cockerell, 1907:103, ♀. Holotype ♀, Maine, August 4. - Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538.:486 ( listed as synonym of Sphecodes dichrous Smith, 1853).
Sphecodes macfarlandi Viereck, 1909:292 - Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538.:486 ( listed as synonym of Sphecodes dichrous Smith, 1853).