Ichneumon calcatorius Thunberg, 1822:254, 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.:95, Holotype ♀ (University of Upsala, Sweden). - As Orgichneumon calcatorius: - 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 otiosus Say, 1828:69, sex not indicated.Indiana; 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.:95, type 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.:95 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)); 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.:518 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)).
Ichneumon infidelis Cresson, 1867:296, ♂. Holotype ♂, Connecticut (Coll. Norton); 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.:95, 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.:95 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)); 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.:518 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)).
Ichneumon sylvanus Holmgren, 1880:27 - 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.:518 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)).
Ichneumon burkei Viereck, 1910:383, ♂. Holotype ♂, Wisconsin (U.S.N.M., No. 12701, leg. H.E. Burke); 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.:95, Holotype ♂ (U.S.N.M.). - 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.:95 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)); 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.:518 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)).
Ichneumon calcatorius nigritarsis Schmiedeknecht, 1928:219 - 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.:518 ( listed as synonym of Orgichneumon calcatorius (Thunberg, 1822)).