Prosapis wootoni Cockerell, 1896:26, ♂. ♂, New Mexico, Ruidoso Creek, 7500 feet, July 6, 1895 (leg. E.O. Wooton); Genaro & Franz, 2008Genaro, J.A. & N. Franz 2008. The bees of Greater Puerto Rico (Hymenoptera: Apoidea: Anthophila). Insecta Mundi 40:1-21.:4, Holotype ♂ (USNM). - As Hylaeus wootoni: - Meade-Waldo, 1923Meade-Waldo, G. 1923. Hymenoptera, fam. Apidae, subfam. Prosopidinae. Genera Insectorum 181:1-45. (distribution); Cockerell & Sumner, 1931Cockerell, T.D.A. & R. Sumner 1931. Rocky Mountain bees. III. American Museum Novitates 490:1-15. (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); Snelling, 1994Snelling, R.R. 1994. Collecting on Guana Island. Melissa 7:15. (distribution); Snelling, 2005Snelling, R.R. 2005. Wasps, ants, and bees: Aculeate Hymenoptera. In: Lazell, J. (Ed.). Island: Fact and Theory in Nature. 283-296. (distribution); Genaro & Franz, 2008Genaro, J.A. & N. Franz 2008. The bees of Greater Puerto Rico (Hymenoptera: Apoidea: Anthophila). Insecta Mundi 40:1-21. (distribution); Genaro, 2016Genaro, J.A. 2016. Especies nuevas y nuevos registros de abejas para las Antillas (Hymenoptera: Anthophila; Colletidae, Halictidae). Novitates Caribaea 10:38-51. (distribution); Gibbs, 2020Gibbs, J. 2020. Hylaeus (Hylaeana) dominicalis, a new species and the first colletid bee recorded from Dominica, Lesser Antilles (Hymenoptera: Colletidae: Hylaeinae). Journal of Melittology 93:1-6. (distribution); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution). - As Prosopis wootoni: - Cockerell, 1917Cockerell, T.D.A. 1917. Descriptions and records of bees. - LXXVIII. The Annals and Magazine of Natural History ser. 8: v. 20 (120):436-441. (distribution).
Prosapis divergens Cockerell, 1896:29, ♂. ♂, Colorado, Four-mile Hill, 8 miles S. of Steamboat Springs, July 15, 1894 (leg. C.F. Baker). - Cockerell, 1898Cockerell, T.D.A. 1898. The North American bees of the genus Prosapis. The Entomologist 31:185-192. (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.:1765 ( listed as synonym of Hylaeus wootoni (Cockerell, 1896)).
Prosopis clandestinus Viereck, 1903:65 - 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.:1765 ( listed as synonym of Hylaeus wootoni (Cockerell, 1896)). - As Prosopis clandestina: - Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution).
Prosopis excavata Swenk & Cockerell, 1910:70, ♀. Holotype ♀, Monroe Canyon, Sioux County, Nebraska, August 23, 1908 (University of Nebraska, leg. R.W. Dawson); Muma, 1952Muma, M.H. 1952. Insect types in the collections of the University of Nebraska State Museum. Bulletin of the University of Nebraska State Museum 3 (8):1-35.:22, Type ♀ (University of Nebraska State Museum). - 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.:1765 ( listed as synonym of Hylaeus wootoni (Cockerell, 1896)).
Hylaeus perparvus Cockerell & Summer, 1931:10, ♂. ♂, Colorado, Estes Park, July 19, 1916 (leg. F.E. Lutz). - 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.:1765 ( listed as synonym of Hylaeus wootoni (Cockerell, 1896)).