Osmia conjunctoides Robertson, 1893:276 Synonymized with Osmia subfasciata subfasciata Cresson, 1872 by Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:83. - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (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); 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.:2050 ( listed as synonym of Osmia subfasciata subfasciata Cresson, 1872); Rightmyer et al., 2011Rightmyer, M.G., M. Deyrup, J.S. Ascher & T. Griswold 2011. Osmia species (Hymenoptera, Megachilidae) from the southeastern United States with modified facial hairs: taxonomy, host plants, and conservation status. ZooKeys 148:257-278. (distribution).
Osmia subfasciata miamiensis Mitchell, 1962:84, ♂♀. Allotype ♂, Miami Beach, Fla., Feb. 8, 1917 (leg. Graenicher); Holotype ♀, Cape Florida, Fla., Feb. 15, 1925 (Mitchell, leg. S. Graenicher). Synonymized with Osmia conjunctoides Robertson, 1893 by Rightmyer et al., 2011Rightmyer, M.G., M. Deyrup, J.S. Ascher & T. Griswold 2011. Osmia species (Hymenoptera, Megachilidae) from the southeastern United States with modified facial hairs: taxonomy, host plants, and conservation status. ZooKeys 148:257-278.:270. - 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); Pascarella et al., 1999Pascarella, J.B., Waddington, K.D. & Neal, P.R. 1999. The Bee Fauna (Hymenoptera: Apoidea) of Everglades National Park, Florida and adjacent areas: Distribution, Phenology, and Biogeography. Journal of the Kansas Entomological Society 72 (1):32-45. (distribution); Pascarella, 2006Pascarella, J.B. 2006. The bees of Florida. . (distribution).