Lithurgus gibbosus Smith, 1853:147, ♀. ♀, United States; Snelling, 1983Snelling, R.R. 1983. The North American species of the bee genus Lithurge (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 343:1-11.:6, Holotype ♀ (British Museum (Natural History)). - Cresson, 1879Cresson, E.T. 1879. Catalogue of North American Apidae. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 7:215-232. (distribution); Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Cockerell, 1900Cockerell, T.D.A. 1900. Some bees visiting the flowers of Mesquite. The Entomologist 33 (448):243-245. (distribution); Cockerell, 1914Cockerell, T.D.A. 1914. Descriptions and records of bees. - LVIII. The Annals and Magazine of Natural History ser. 8: v. 13 (76):424-433. (distribution); Mitchell, 1938Mitchell, T.B. 1938. The bee genus Lithurgus (Hymenoptera: Megachilidae). Psyche 45:146-155. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557. (distribution); Pascarella, 2006Pascarella, J.B. 2006. The bees of Florida. . (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). - As Lithurge gibbosa: - Snelling, 1983Snelling, R.R. 1983. The North American species of the bee genus Lithurge (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 343:1-11. (distribution); Pascarella et al., 1999Pascarella, J.B., Waddington, K.D. & Neal, P.R. 1999. The Bee Fauna (Hymenoptera: Apoidea) of Everglades National Park, Florida and adjacent areas: Distribution, Phenology, and Biogeography. Journal of the Kansas Entomological Society 72 (1):32-45. (distribution). - As Lithurge gibbosus: - 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).
Lithurgus compressus Smith, 1853:147, ♂. ♂, United States (leg. E. Doubleday, Esq.); Snelling, 1983Snelling, R.R. 1983. The North American species of the bee genus Lithurge (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 343:1-11.:7, Holotype ♂ (British Museum (Natural History)). - Cresson, 1879Cresson, E.T. 1879. Catalogue of North American Apidae. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 7:215-232. (distribution); Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Mitchell, 1938Mitchell, T.B. 1938. The bee genus Lithurgus (Hymenoptera: Megachilidae). Psyche 45:146-155.:152 ( listed as synonym of Lithurgus gibbosus Smith, 1853); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:7 ( listed as synonym of Lithurgus gibbosus Smith, 1853); 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.:1983 ( listed as synonym of Lithurge gibbosus (Smith, 1853)); Snelling, 1983Snelling, R.R. 1983. The North American species of the bee genus Lithurge (Hymenoptera: Megachilidae). Contributions in Science, Natural History Museum Los Angeles County 343:1-11.:6 ( listed as synonym of Lithurge gibbosa (Smith, 1853)).