Exochus pleuralis Cresson, 1864:286, ♂. ♂, Illinois (leg. Dr. Samuel Lewis); Townes & Townes, 1959Townes, H.K. & M. Townes 1959. Ichneumon-flies of America north of Mexico: 1. Subfamily Metopiinae. Bulletin of the United States National Museum 216 (1):1-318.:256, Type ♂ (Philadelphia). - 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); Townes & Townes, 1959Townes, H.K. & M. Townes 1959. Ichneumon-flies of America north of Mexico: 1. Subfamily Metopiinae. Bulletin of the United States National Museum 216 (1):1-318. (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).
Exochus pallipes Cresson, 1864:287, ♂.Illinois (leg. Dr. Samuel Lewis); Davis, 1897Davis, G.C. 1897. A review of the Ichneumonid subfamily Tryphoninae. Transactions of the American Entomological Society 24 (3/4):193-348.:216, Type (Amer. Ent. Soc.); Townes & Townes, 1959Townes, H.K. & M. Townes 1959. Ichneumon-flies of America north of Mexico: 1. Subfamily Metopiinae. Bulletin of the United States National Museum 216 (1):1-318.:256, Type ♂ (Philadelphia). Synonymized with Exochus pleuralis Cresson, 1864 by Townes & Townes, 1959Townes, H.K. & M. Townes 1959. Ichneumon-flies of America north of Mexico: 1. Subfamily Metopiinae. Bulletin of the United States National Museum 216 (1):1-318.:256. - 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); 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.:562 ( listed as synonym of Exochus pleuralis Cresson, 1864). - As Exochus pallidipes: - 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); 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.:562 (emendation). - As Exochus pallidipes: - 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); 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.:562 (emendation).
Exochus evectus Cresson, 1872:168, ♀. Holotype ♀, Texas (G.W. Belfrage); Townes & Townes, 1959Townes, H.K. & M. Townes 1959. Ichneumon-flies of America north of Mexico: 1. Subfamily Metopiinae. Bulletin of the United States National Museum 216 (1):1-318.:256, Type ♀ (Washington). - Davis, 1897Davis, G.C. 1897. A review of the Ichneumonid subfamily Tryphoninae. Transactions of the American Entomological Society 24 (3/4):193-348.:216 ( listed as synonym of Exochus pallipes Cresson, 1864); Townes & Townes, 1959Townes, H.K. & M. Townes 1959. Ichneumon-flies of America north of Mexico: 1. Subfamily Metopiinae. Bulletin of the United States National Museum 216 (1):1-318.:256 ( listed as synonym of Exochus pleuralis 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.:562 ( listed as synonym of Exochus pleuralis Cresson, 1864).
Exochus xanthopsis Ashmead, 1896:201 - Davis, 1897Davis, G.C. 1897. A review of the Ichneumonid subfamily Tryphoninae. Transactions of the American Entomological Society 24 (3/4):193-348.:216 ( listed as synonym of Exochus pallipes Cresson, 1864).