Agathis iornàta Say, 1836:226, ♂. ♂, Indiana. - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. - IV: Braconidae. Sumptibus Guilelmi Engelmann, VIII + 323. (distribution). - As Ceratogastra ornata: - Cushman, 1927Cushman, R.A. 1927. Miscellaneous notes and descriptions of Ichneumon-flies. Proceedings of the United States National Museum 72 (2709):1-22.:21 (comb. nov.); 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198. (distribution); Ruíz-Cancino et al., 2002Ruíz-Cancino, E., D.R. Kasparyan & J.M. Coronado Blanco 2002. Ichneumonidae. In: Llorente Bousquets, J. & J.J. Morrone (Ed.). Biodiversidad, taxonomía y biogeografía de artrópodos de México: Hacia una síntesis de su conocimiento, volumen III. 631-646. (distribution).
Agathis polìta Say, 1836:225, ♂♀. ♂, ♀, Indiana. - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. - IV: Braconidae. Sumptibus Guilelmi Engelmann, VIII + 323. (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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:579 ( listed as synonym of Ceratogastra ornata (Say, 1836)). - As Ceratogastra polita: - Cushman, 1927Cushman, R.A. 1927. Miscellaneous notes and descriptions of Ichneumon-flies. Proceedings of the United States National Museum 72 (2709):1-22.:21 (comb. nov.).
Ceratosoma apicalis Cresson, 1865:282, ♂♀. 3 ♀♀, 1 ♂, Colorado Territory, 1864 (leg. Mr. James Ridings). Synonymized with Ceratogastra ornata (Say, 1836) 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:579.
Ceratosoma fasciata Cresson, 1865:283, sex not indicated.Eastern and Middle States. - 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:579 ( listed as synonym of Ceratogastra ornata (Say, 1836)).
Ceratosoma rubyata Davis, 1897:366, ♀. Holotype ♀, Illinois (leg. Dr. Nason). - 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:579 ( listed as synonym of Ceratogastra ornata (Say, 1836)).
Ceratosoma trifasciata Cushman, 1927:21, ♀. Holotype ♀, Forest Hills, Massachusetts, October 3, 1924 (U.S.N.M., No. 40448, leg. George Salt). Synonymized with Ceratogastra ornata (Say, 1836) 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:579.