Osmia integra Cresson, 1878:106, ♂. 2 ♂♂, Colorado (leg. Morrison). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Cockerell, 1911Cockerell, T.D.A. 1911. New and little known bees. Transactions of the American Entomological Society 37:217-241. (distribution); Cockerell, 1912Cockerell, T.D.A. 1912. Names applied to bees of the genus Osmia, found in North America. Proceedings of the United States National Museum 42:215-225. (distribution); Sandhouse, 1924Sandhouse, G. 1924. Bees of the genus Osmia in the collection of the California Academy of Sciences. Proceedings of the California Academy of Sciences ser. 4: v. 13 (22):341-372. (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); Rios-Velasco et al., 2014Rios-Velasco, C., D.I. Barlanga-Reyes, R. Ayala-Barajas, M.Á. Salas-Marina, J.E. Ibarra-Rendón, P.B. Zamudio Flores, A. Roma-Chacón & C.H. Acosta-Muñiz 2014. Identification of Megachilid species (Hymenoptera: Megachilidae) and other pollinators in apple orchards in Chihuahua, México. The Florida Entomologist 97 (4):1829-1834. (distribution).
Osmia novomexicana Cockerell, 1903:332, ♀. ♀, Arroyo Pecos, Las Vegas, New Mexico, June 7 (leg. Wilmatte P. Cockerell). - Cockerell, 1906Cockerell, T.D.A. 1906. New Rocky Mountain bees, and other notes. The Canadian Entomologist 38 (5):160-166. (distribution); Cockerell, 1906Cockerell, T.D.A. 1906. The bees of New Mexico. Transactions of the American Entomological Society 32:289-314. (distribution); Cockerell, 1907Cockerell, T.D.A. 1907. The bees of Boulder County, Colorado. University of Colorado Studies 4:239-259. (distribution); Cockerell, 1911Cockerell, T.D.A. 1911. Some bees from western Canada. The Canadian Entomologist 43 (1):33-34. (distribution); Cockerell, 1912Cockerell, T.D.A. 1912. Names applied to bees of the genus Osmia, found in North America. Proceedings of the United States National Museum 42:215-225. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:74 ( listed as synonym of Osmia integra Cresson, 1878); 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.:2038 ( listed as synonym of Osmia integra Cresson, 1878).
Osmia florissanticola Cockerell, 1906:450, ♀. 2 ♀♀, Florissant, June 16, 1906 (leg. T.D.A. Cockerell). - Cockerell, 1912Cockerell, T.D.A. 1912. Names applied to bees of the genus Osmia, found in North America. Proceedings of the United States National Museum 42:215-225. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:73 ( listed as synonym of Osmia integra Cresson, 1878); 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.:2038 ( listed as synonym of Osmia integra Cresson, 1878).
Osmia integra nigrigena Michener, 1936:90, ♂♀. Allotype ♀, La Crescenta, Calif., April 28, 1934 (leg. Michener); Holotype ♂, La Crescenta, Calif., May 5, 1934 (leg. Michener). - 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.:2038 ( listed as synonym of Osmia integra Cresson, 1878).