Halictus oenotherae Stevens, 1920:37, McGinley, 2003McGinley, R.J. 2003. Studies of Halictinae (Apoidea: Halictidae), II: Revision of Sphecodogastra Ashmead, floral specialists of Onagraceae. Smithsonian Contributions to Zoology 610:1-55.:42, Holotype ♀ (National Museum of Natural History, Smithsonian Institution, No. 23848); Gibbs et al., 2013Gibbs, J., L. Packer, S. Dumesh & B.N. Danforth 2013. Revision and reclassification of Lasioglossum (Evylaeus), L. (Hemihalictus) and L. (Sphecodogastra) in eastern North America (Hymenoptera: Apoidea: Halictidae). Zootaxa 3672 (1):1-117.:86, Holotype ♀, examined (NMNH, 12033). - As Lasioglossum oenotherae: - Gibbs et al., 2013Gibbs, J., L. Packer, S. Dumesh & B.N. Danforth 2013. Revision and reclassification of Lasioglossum (Evylaeus), L. (Hemihalictus) and L. (Sphecodogastra) in eastern North America (Hymenoptera: Apoidea: Halictidae). Zootaxa 3672 (1):1-117. (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). - As Sphecodogastra oenotherae: - McGinley, 2003McGinley, R.J. 2003. Studies of Halictinae (Apoidea: Halictidae), II: Revision of Sphecodogastra Ashmead, floral specialists of Onagraceae. Smithsonian Contributions to Zoology 610:1-55. (distribution), 40 (comb. nov.).
Halictus ralenci Crawford, 1932:70, Gibbs et al., 2013Gibbs, J., L. Packer, S. Dumesh & B.N. Danforth 2013. Revision and reclassification of Lasioglossum (Evylaeus), L. (Hemihalictus) and L. (Sphecodogastra) in eastern North America (Hymenoptera: Apoidea: Halictidae). Zootaxa 3672 (1):1-117.:86, Holotype ♀, examined (AMNH). - McGinley, 2003McGinley, R.J. 2003. Studies of Halictinae (Apoidea: Halictidae), II: Revision of Sphecodogastra Ashmead, floral specialists of Onagraceae. Smithsonian Contributions to Zoology 610:1-55.:40 ( listed as synonym of Sphecodogastra oenotherae (Stevens, 1920)); Gibbs et al., 2013Gibbs, J., L. Packer, S. Dumesh & B.N. Danforth 2013. Revision and reclassification of Lasioglossum (Evylaeus), L. (Hemihalictus) and L. (Sphecodogastra) in eastern North America (Hymenoptera: Apoidea: Halictidae). Zootaxa 3672 (1):1-117.:86 ( listed as synonym of Lasioglossum oenotherae (Stevens, 1920)).