Ichneumon brevipennis Cresson, 1864:174, ♀. ♀, Rocky Mountains, Colorado Territory; 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.:170, Holotype ♀ (A.N.S.). - Cresson, 1868Cresson, E.T. 1868. A list of Ichneumonidae of North America, with descriptions of new species. Part II. Transactions of the American Entomological Society 2:89-114. (distribution); 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). - As Cratichneumon brevipennis: - 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).
Ischnus volens Cresson, 1864:192, ♂. ♂, Virginia (leg. Dr. Wilson); ♂, Illinois (leg. Dr. Lewis); 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.:170, Holotype ♂ (A.N.S.); 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.:181, Holotype ♂ (ANS). - 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.:170 ( listed as synonym of Cratichneumon brevipennis (Cresson, 1864)); 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.:493 ( listed as synonym of Cratichneumon brevipennis (Cresson, 1864)). - As Cratichneumon volens: - As Cratichneumon volens volens: - 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).
Ichneumon brevipennis obsoletus Riley, 1877:55, 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.:170, type lost; 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.:181, Holotype ♀ (lost). - 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.:170 ( listed as synonym of Cratichneumon brevipennis (Cresson, 1864)); 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.:181 ( listed as synonym of Cratichneumon volens volens (Cresson, 1864)); 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.:493 ( listed as synonym of Cratichneumon brevipennis (Cresson, 1864)).