Ichneumon propitius Cresson, 1872:156, ♂. Holotype ♂, Texas (G.W. Belfrage); Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part III. Synopsis of the Ichneumoni: Genera Ichneumon and Thyrateles. The Canadian Entomologist 93 (Supplement 21):207-368.:297, 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.:83, Holotype ♀ (ANS). - Cresson, 1877Cresson, E.T. 1877. Notes on the species belonging to the subfamily Ichneumonides, found in America north of Mexico. Transactions of the American Entomological Society 6:129-212. (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); Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part III. Synopsis of the Ichneumoni: Genera Ichneumon and Thyrateles. The Canadian Entomologist 93 (Supplement 21):207-368. (distribution). - As Amblyteles propitius: - Cushman, 1933Cushman, R.A. 1933. Descriptions of new ichneumon-flies, with taxonomic notes. Proceedings of the United States National Museum 82 (2955):1-16. (distribution), 1 (comb. nov.). - As Hemihoplis propitius: - 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), 83 (comb. nov.); 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). - As Pterocormus propitius: - 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), 526 (comb. nov.).
Ichneumon tharotis Packard, 1881:22, Heinrich, 1961Heinrich, G.H. 1961. Synopsis of Nearctic Ichneumoninae Stenopneusticae with particular reference to the northeastern region (Hymenoptera). Part III. Synopsis of the Ichneumoni: Genera Ichneumon and Thyrateles. The Canadian Entomologist 93 (Supplement 21):207-368.:297, Holotype ♀ (U.S.N.M.); 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.:83, Holotype ♀ (USNM). - 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 III. Synopsis of the Ichneumoni: Genera Ichneumon and Thyrateles. The Canadian Entomologist 93 (Supplement 21):207-368.:297 ( listed as synonym of Ichneumon propitius Cresson, 1872); 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.:83 ( listed as synonym of Hemihoplis propitius (Cresson, 1872)); 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.:526 ( listed as synonym of Pterocormus propitius (Cresson, 1872)).