Epeolus texanus Cresson, 1878:87, ♂. 5 ♂♂, Texas (leg. Belfrage); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Lectotype ♂ (Academy of Natural Sciences, No. 2223). - 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, 1899Cockerell, T.D.A. 1899. Catálogo de las Abejas de Mexico. Biblioteca Agricola de las Secretaria de Fomento, Mexico, 1-20. (distribution); Brues, 1903Brues, C.T. 1903. Studies of Texan bees. Part 1. Entomological News 14:79-85. (distribution). - As Deringiella texanus: - 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 Triepeolus texanus: - Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170. (distribution). - As Triepeolus texanus texanus: - 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).
Triepeolus wyomingensis Cockerell, 1905:201, ♂. ♂, Wyoming (leg. John H. Lovell); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Holotype ♂ (U. S. National Museum of Natural History, No. 100040). Synonymized with Triepeolus texanus (Cresson, 1878) by Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121. - Cockerell, 1928Cockerell, T.D.A. 1928. Some bees from Utah. Psyche 35 (4):232-234. (distribution).
Triepeolus Eldredi Cockerell, 1907:52, ♂. ♂, N. Yakima, Washington State, Aug. 7, 1903 (leg. Eldred Jenne); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Holotype ♂ (U. S. National Museum of Natural History, No. 100029). Synonymized with Triepeolus texanus (Cresson, 1878) by Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121.
Triepeolus helianthi grandior Cockerell, 1919:300, ♂♀. Cockerell, 1919Cockerell, T.D.A. 1919. The bees of Peaceful Valley, Colorado. Journal of the New York Entomological Society 27:298-300.:300, 1 ♀, near San Ignacio, New Mexico (leg. W. Porter); Cockerell, 1919Cockerell, T.D.A. 1919. The bees of Peaceful Valley, Colorado. Journal of the New York Entomological Society 27:298-300.:300, ♂♀, Florissant, Colo., July 29 (leg. S.A. Rohwer); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Holotype ♂ (U. S. National Museum of Natural History, No. 100030). Synonymized with Triepeolus texanus (Cresson, 1878) by Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121. - Cockerell, 1921Cockerell, T.D.A. 1921. The epeoline bees of the American Museum Rocky Mountain expeditions. American Museum Novitates 23:1-16. (distribution).
Triepeolus rectangularis Cockerell, 1921:9, ♂♀. Holotype ♂, Utah: Huntsville, near Ogden, July 26, 1920; Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Holotype ♀ (American Museum of Natural History, No. 25091). Synonymized with Triepeolus texanus (Cresson, 1878) by Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121. - Cockerell & Sandhouse, 1924Cockerell, T.D.A. & G. Sandhouse 1924. Parasitic bees (Epeolinae and Melectinae) in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences 13 (19):305-324. (distribution).
Triepeolus dichropus Cockerell, 1921:11, ♂. Holotype ♂, Colorado: Glenwood Springs, about 5800 ft. alt, July 29, 1919 (leg. Herbert F. Schwarz); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Holotype ♂ (American Museum of Natural History, No. 25094). Synonymized with Triepeolus texanus (Cresson, 1878) by Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121.
Triepeolus pallidiventris Cockerell & Sandhouse, 1924:308, ♂. Holotype ♂, Vivian Park, Utah, July 7, 1922 (Mus. Calif. Acad. Sci., No. 1600, leg. E.P. Van Duzee); Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121, Holotype ♂ (California Academy of Sciences, No. 1600). Synonymized with Triepeolus texanus (Cresson, 1878) by Rightmyer, 2008Rightmyer, M.G. 2008. A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae).-Part I. Zootaxa 1710:1-170.:121.