Cryptus flavipectus Provancher, 1879:134, Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part II. Synopsis of the Ichneumonini: genera Orgichneumon, i>Cratichneumon, Homotherus, i>Aculichneumon, Spilichneumon. The Canadian Entomologist 92 (Supplement 18):89-205.:162, Holotype ♂ (Provincial Museum Quebec). - As Cratichneumon flavipectus: - Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part II. Synopsis of the Ichneumonini: genera Orgichneumon, i>Cratichneumon, Homotherus, i>Aculichneumon, Spilichneumon. The Canadian Entomologist 92 (Supplement 18):89-205. (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. (distribution).
Ichneumon pygmaeus Davis, 1897:350, ♀. 2 ♀♀, Mt. Washington, N. H. (leg. Slosson); Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part II. Synopsis of the Ichneumonini: genera Orgichneumon, i>Cratichneumon, Homotherus, i>Aculichneumon, Spilichneumon. The Canadian Entomologist 92 (Supplement 18):89-205.:162, Holotype ♀ (A.N.S.). - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution); Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part II. Synopsis of the Ichneumonini: genera Orgichneumon, i>Cratichneumon, Homotherus, i>Aculichneumon, Spilichneumon. The Canadian Entomologist 92 (Supplement 18):89-205.:162 ( listed as synonym of Cratichneumon flavipectus (Provancher, 1879)); 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.:494 ( listed as synonym of Cratichneumon flavipectus (Provancher, 1879)).
Cratichneumon ericaeus Townes, 1944:335 - Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part II. Synopsis of the Ichneumonini: genera Orgichneumon, i>Cratichneumon, Homotherus, i>Aculichneumon, Spilichneumon. The Canadian Entomologist 92 (Supplement 18):89-205.:162 ( listed as synonym of Cratichneumon flavipectus (Provancher, 1879)); 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.:494 ( listed as synonym of Cratichneumon flavipectus (Provancher, 1879)).
Cratichneumon flavipectus mississippi Heinrich, 1971:989, ♂♀. Holotype ♀, Water Valley, Yalobusha Co., Mississ., U.S.A., 6 to 20-X-70 (Collection Gerd Heinrich II, leg. M. Horan); Heinrich, 1977Heinrich, G.H. 1977. Ichneumoninae of Florida and neighboring states (Hymenoptera: Ichneumonidae, subfamily Ichneumoninae). Arthropods of Florida and neighboring land areas 9:1-350.:177, Holotype ♀ (CGH II). Synonymized with Cratichneumon flavipectus (Provancher, 1879) 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.:494. - Heinrich, 1977Heinrich, G.H. 1977. Ichneumoninae of Florida and neighboring states (Hymenoptera: Ichneumonidae, subfamily Ichneumoninae). Arthropods of Florida and neighboring land areas 9:1-350. (distribution).