Cryptus discitérgus Say, 1836:231,Indiana. - 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 Mesochorus discitergus: - 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); Ruíz-Cancino et al., 2002Ruíz Cancino, E., J.M. Coronado-Blanco & J.A. Martínez Ramírez 2002. Contribución al conocimiento de Ichneumonidae (Hymenoptera) del sureste de México. Universidad Autónoma de Tamaulipas, Cd. Victoria, Tamaulipas, México. 1-119. (distribution); 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); Ruíz-Cancino et al., 2012Ruíz-Cancino, E., J.M. Coronado-Blanco, A.I. Khalaim, D.R. Kasparyan, A.M. Corona López & E.T. Sánchez 2012. Ichneumonidae (Hym.) de algunos estados del centro de México. Entomología mexicana 11 (2):1039-1044. (distribution); Sánchez-García et al., 2015Sánchez-García, J.A., R.Jarquín-López, L. Martínez-Martínez, J.M. Coronado-Blanco & E. Ruíz-Cancino 2015. Ichneumonoidea (Hymenoptera) del estado de Oaxaca, México. Entomología mexicana 2:823-829. (distribution); Araujo et al., 2019Araujo, R.O., R. Garrido, J.N. Mesquita-Neto & V.H. Monzón 2019. Real and potential distribution of the hyperparasitoid genus Mesochorus Gravenhorst (Ichneumonidae: Mesochorinae) in Brazil. Gayana 83 (2):135-140. (distribution).
Mesochorus vitreus Walsh, 1861:364 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus obliquus Cresson, 1872:24, ♀.Pennsylvania. - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus facialis Bridgman, 1884:431 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus pulchellus Cook & Davis, 1891:10 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus infernalis Viereck, 1911:192, ♂♀. Type, Santa Maria, Texas, March 15, 1909 (U.S.N.M., No. 13480, leg. T.D. Urbahns). - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus nigrisignus Viereck, 1911:192, ♀. Type ♀, Grand River, Iowa (U.S.N.M., No. 13509, leg. R.L. Webster). - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus concinnatus Wilkinson, 1929:105 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus narangae Uchida, 1930:129 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus facialis nigristemmaticus Uchida, 1931:158 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).
Mesochorus havrolenkoi Blanchard, 1949:48 - 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.:708 ( listed as synonym of Mesochorus discitergus (Say, 1836)).