Nomada hemphilli Cockerell, 1903:561, ♂.So. Cal. (Acad. Nat. Sci. Phil.); Evans, 1972Evans, D.L. 1972. A revision of the subgenus Holonomada of the genus Nomada (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 30 (1 and 2):1-34.:20, Holotype ♂ (Museum of the Academy of Natural Sciences at Philadelphia). - Cockerell, 1912Cockerell, T.D.A. 1912. Names applied to bees of the genus Nomada, found in North America. Proceedings of the United States National Museum 41:225-243. (distribution); Evans, 1972Evans, D.L. 1972. A revision of the subgenus Holonomada of the genus Nomada (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 30 (1 and 2):1-34. (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); Alexander & Schwarz, 1994Alexander, B.A. & M. Schwarz 1994. A Catalog of the Species of Nomada (Hymenoptera: Apoidea) of the World. The University of Kansas Science Bulletin 55 (7):239-270. (distribution); Esperanza de Pedro, 2021Esperanza de Pedro, D. 2021. . :. (distribution).
Nomada excurrens Cockerell, 1903:562, ♂.So. Cal. (Acad. Nat. Sci. Phil.); Evans, 1972Evans, D.L. 1972. A revision of the subgenus Holonomada of the genus Nomada (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 30 (1 and 2):1-34.:20, Holotype ♂ (Museum of the Academy of Natural Sciences at Philadelphia). Synonymized with Nomada hemphilli Cockerell, 1903 by Evans, 1972Evans, D.L. 1972. A revision of the subgenus Holonomada of the genus Nomada (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 30 (1 and 2):1-34.:19. - Cockerell, 1912Cockerell, T.D.A. 1912. Names applied to bees of the genus Nomada, found in North America. Proceedings of the United States National Museum 41:225-243. (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.:2109 ( listed as synonym of Nomada hemphilli Cockerell, 1903); Alexander & Schwarz, 1994Alexander, B.A. & M. Schwarz 1994. A Catalog of the Species of Nomada (Hymenoptera: Apoidea) of the World. The University of Kansas Science Bulletin 55 (7):239-270.:254 ( listed as synonym of Nomada hemphilli Cockerell, 1903).
Nomada excellens Cockerell, 1903:573, ♀. Holotype ♀, So. Cal. (Acad. Nat. Sci. Phil.); Evans, 1972Evans, D.L. 1972. A revision of the subgenus Holonomada of the genus Nomada (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 30 (1 and 2):1-34.:20, Holotype ♀ (Museum of the Academy of Natural Sciences at Philadelphia). Synonymized with Nomada hemphilli Cockerell, 1903 by Evans, 1972Evans, D.L. 1972. A revision of the subgenus Holonomada of the genus Nomada (Hymenoptera: Anthophoridae). The Wasmann Journal of Biology 30 (1 and 2):1-34.:19. - Cockerell, 1911Cockerell, T.D.A. 1911. Bees in the collection of the U. S. National Museum. 1. Proceedings of the United States National Museum 39:635-658. (distribution); Cockerell, 1912Cockerell, T.D.A. 1912. Names applied to bees of the genus Nomada, found in North America. Proceedings of the United States National Museum 41:225-243. (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.:2109 ( listed as synonym of Nomada hemphilli Cockerell, 1903); Alexander & Schwarz, 1994Alexander, B.A. & M. Schwarz 1994. A Catalog of the Species of Nomada (Hymenoptera: Apoidea) of the World. The University of Kansas Science Bulletin 55 (7):239-270.:254 ( listed as synonym of Nomada hemphilli Cockerell, 1903).