Halictus bardus Cresson, 1872:251, ♀. 2 ♀♀, Texas (leg. Belfrage); McGinley, 1986McGinley, R.J. 1986. Studies of Halictinae (Apoidea: Halicitidae), I. Revision of the New World Lasioglossum Curtis. Smithsonian Contributions to Zoology 429:1-294.:84, Lectotype ♀ (Academy of Natural Sciences at Philadelphia). - 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); Cockerell, 1898Cockerell, T.D.A. 1898. The insect visitors of flowers in New Mexico. - I. Zoologist ser .4: v. 2:78-81. (distribution); Cockerell, 1901Cockerell, T.D.A. 1901. Contributions from the New Mexico Biological Station. - X. Observations on bees collected at Las Vegas, New Mexico, and in the adjacent Mountains. II. The Annals and Magazine of Natural History ser. 7: v. 7:125-131. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1907Cockerell, T.D.A. 1907. New american bees. - V. The Entomologist 40 (535):265-269. (distribution); Cockerell, 1911Cockerell, T.D.A. 1911. Descriptions and records of bees. - XXXIX. The Annals and Magazine of Natural History ser. 8: v. 8 (47):660-673. (distribution). - As Lasioglossum bardum: - 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); McGinley, 1986McGinley, R.J. 1986. Studies of Halictinae (Apoidea: Halicitidae), I. Revision of the New World Lasioglossum Curtis. Smithsonian Contributions to Zoology 429:1-294. (distribution). - As Lasioglossum bardus: