Prosapis georgica Cockerell, 1896:438, ♂. ♂, Georgia (Coll. Amer. Ent. Soc.). - Cockerell, 1898Cockerell, T.D.A. 1898. The North American bees of the genus Prosapis. The Entomologist 31:185-192. (distribution). - As Hylaeus georgicus: - Meade-Waldo, 1923Meade-Waldo, G. 1923. Hymenoptera, fam. Apidae, subfam. Prosopidinae. Genera Insectorum 181:1-45. (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); 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); Hall & Ascher, 2010Hall, H.G., & J.S. Ascher 2010. Surveys of bees (Hymenoptera: Apoidea: Anthophila) in natural areas of Alachua County in North-Central Florida. The Florida Entomologist 93 (4):609-629. (distribution).
Prosopis georgica leeana Cockerell, 1909:27, sex not indicated.Fedor, Lee County, Texas, March 17, 1909 (leg. Birkmann). - Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538.:77 ( listed as synonym of Hylaeus georgicus (Cockerell, 1896)). - As Prosopis georgica leana: - 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.:1764 ( listed as synonym of Hylaeus georgicus (Cockerell, 1896)).
Hylaeus hydrangeae Mitchell, 1951:244 - Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538. (distribution); 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.:1764 ( listed as synonym of Hylaeus georgicus (Cockerell, 1896)).