Ceratina strenua Smith, 1879:97, ♂. ♂, Texas (British Museum); Cockerell, 1905Cockerell, T.D.A. 1905. Notes on some bees in the British Museum. Transactions of the American Entomological Society 31:309-364.:325, Type (British Museum). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Michener, 1936Michener, C.D. 1936. Western bees of the genus Ceratina, subgenus Zaodontomerus. American Museum Novitates 844:1-13. (distribution); Michener, 1937Michener, C.D. 1937. Records and descriptions of North American bees. The Annals and Magazine of Natural History ser. 10 (19):313-329, 393-410.:404 (first description female); 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); Owens et al., 2018Owens, B.E., L. Allain, E.C. van Gorder, J.L. Bossart & C.E. Carlton 2018. The bees (Hymenoptera: Apoidea) of Louisiana: An updated, annotated checklist. Proceedings of the Entomological Society of Washington 120 (2):272-307. (distribution).
Ceratina metallica Smith, 1907:121, ♂. 2 ♂♂, Sunburry, Pennsylvania (leg. C.F. Baker); Muma, 1952Muma, M.H. 1952. Insect types in the collections of the University of Nebraska State Museum. Bulletin of the University of Nebraska State Museum 3 (8):1-35.:17, Type ♂ (University of Nebraska State Museum). - Michener, 1936Michener, C.D. 1936. Western bees of the genus Ceratina, subgenus Zaodontomerus. American Museum Novitates 844:1-13. (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.:2179 ( listed as synonym of Ceratina strenua Smith, 1879).