Crabro scutellatus Say, 1824:341, ♀. ♀, Pennsylvania. - Cresson, 1862Cresson, E.T. 1862. Catalogue of the described species of North American Hymenoptera (Continued from page 211.). Proceedings of the Entomological Society of Philadelphia 1 (8):227-238. (distribution); Fox, 1895Fox, W.J. 1895. The Crabroninae of Boreal America. Transactions of the American Entomological Society 22 (2):129-226. (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.:1666 ( listed as synonym of Crossocerus lentus (Fox, 1895)).
Crabro lentus Fox, 1895:190, ♀ - Fox, 1895Fox, W.J. 1895. The Crabroninae of Boreal America. Transactions of the American Entomological Society 22 (2):129-226. (distribution); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution). - As Crossocerus lentus: - Krombein, 1963Krombein, K.V. 1963. Natural history of Plummers Island, Maryland. XVII. Annotated list of the wasps (Hymenoptera: Bethyloidea, Scolioidea, Vespoidea, Pompiloidea, Sphecoidea). Proceedings of the Biological Society of Washington 76:255-280. (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); Leclercq, 2000Leclercq, J. 2000. Hyménopteres Sphécides Crabroniens des Amériques du genre Crossocerus Lepeletier & Brullé, 1835. Notes fauniques de Gembloux 40:3-75. (distribution).
Crabro scutellifer Dalla Torre, 1897:625, no descr. Replacement name for Crabro scutellatus Say, 1824 by Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:625. Replacement name for Crabro scutellatus Say, 1824 (nec Scheven). Synonymized with Crossocerus lentus (Fox, 1895) by 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.:1666. - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution).