Halictus lusorius Cresson, 1872:252, ♀. 2 ♀♀, Texas (leg. Belfrage), Lectotype ♀ (Academy of Natural Scienes of Philadelphia, No. 2115), designated by 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.:34; 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.:83, Lectotype ♀ (ANSP, 2115). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Cockerell, 1897Cockerell, T.D.A. 1897. The bees of the genus Halictus found in New Mexico. I. Species without any green or blue. Transactions of the American Entomological Society 24:163-168. (distribution). - As Evylaeus lusorius: - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution). - As Lasioglossum lusorium: - 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). - As Sphecodogastra lusoria: - 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), 34 (comb. nov.).
Halictus galpinsiæ Cockerell, 1903:242, no sex indicated. Type, Pecos, June 22, 1903 (leg. Cockerell); 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.:34, Holotype ♀ (University of Colorado); 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.:84, Holotype ♀ (UCMC). Synonymized with Sphecodogastra lusoria (Cresson, 1872) by 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.:34. - Cockerell, 1908Cockerell, T.D.A. 1908. Some bees of the genus Halictus. Proceedings of the Entomological Society of Washington 9:119-120. (distribution); Cockerell, 1919Cockerell, T.D.A. 1919. The bees of the Rocky Mountain National Park (Hymenop.). Entomological News and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia 30 (10):286-294. (distribution).
Halictus gelidus Vachal, 1904:481, ♂. Holotype ♂, Morrison (Hofmuseum (Vienne)); 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.:34, Holotype ♂ (Naturhistorisches Museum, Wien (Vienna, Austria)); Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:29, Holotype ♂ (NMW). - 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.:34 ( listed as synonym of Sphecodogastra lusoria (Cresson, 1872)); Rasmussen, 2012Rasmussen, C. 2012. Joseph Vachal (1838–1911): French entomologist and politician. Zootaxa 3442:1-52.:29 ( listed as synonym of Lasioglossum aberrans (Crawford, 1903)).