Nomada modesta Cresson, 1863:286, ♂♀. 2 ♂♂, Maine (Coll. E. Norton); 4 ♀♀, 1 ♂, Rock Island, Ill. (Coll. Benj. D. Walsh, Esq.). - Cockerell, 1900Cockerell, T.D.A. 1900. Observations on bees collected at Las Vegas, New Mexico, and in the adjacent Mountains. The Annals and Magazine of Natural History ser. 7: v. 5:401-415. (distribution); Cockerell, 1903Cockerell, T.D.A. 1903. North American bees of the genus Nomada. Proceedings of the Academy of Natural Sciences of Philadelphia 55:580-614. (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); Swenk, 1912Swenk, M.H. 1912. Studies of North American bees. I. Family Nomadidae. University Studies of the University of Nebraska 12 (1):1-113. (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); 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.:242 ( listed as synonym of Nomada vegana Cockerell, 1903); Pascarella, 2006Pascarella, J.B. 2006. The bees of Florida. . (distribution).
Nomada modesta vegana Cockerell, 1903:610, ♀.Las Vegas, N. M., July 12, 1899 (leg. A. Garlick). - Swenk, 1912Swenk, M.H. 1912. Studies of North American bees. I. Family Nomadidae. University Studies of the University of Nebraska 12 (1):1-113. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:356 ( listed as synonym of Nomada modesta Cresson, 1863); 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.:2112 ( listed as synonym of Nomada modesta Cresson, 1863). - As Nomada vegana: - Cockerell, 1905Cockerell, T.D.A. 1905. The bees of the genus Nomada found in Colorado, with a table to separate all the species of the Rocky Mountains. Bulletin of the Colorado Agricultural Experiment Station 94:69-85. (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); Hall & Ascher, 2011Hall, H.G., & J.S. Ascher 2011. Surveys of wild bees (Hymenoptera: Apoidea: Anthophila) in organic farms of Alachua County in north-central Florida. The Florida Entomologist 94 (3):539-552. (distribution).
Nomada vegana nitescens Cockerell, 1905:76, ♀. ♀, Fort Collins, Colorado, August 8, 1899 (leg. E.S.G. Titus). - 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.:242 ( listed as synonym of Nomada vegana Cockerell, 1903). - As Nomada modesta nitescens: - Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:356 ( listed as synonym of Nomada modesta Cresson, 1863); 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.:2112 ( listed as synonym of Nomada modesta Cresson, 1863).