Mesoleptus bucephalus Cresson, 1868:36, ♂. 3 ♂♂, Hacienda del Potrero, near Cordova, Mexico (leg. Prof. F. Sumichrast). - 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); Cresson, 1873Cresson, E.T. 1873. Descriptions of Mexican Ichneumonidae. Proceedings of the Academy of Natural Sciences of Philadelphia 25:374-413. (distribution); Cameron, 1883-1888Cameron, P. 1883-1888. Biologia Centrali-Americana - Insecta. Hymenoptera. (Families Tenthredinidae-Chrysididae). Taylor and Francis, Red Lion Court, Fleet Street. 487 pp., 20 pl. (distribution), 284 (listed); 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 Atopotrophos bucephalus: - 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., 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 & Coronado-Blanco, 2002Ruíz-Cancino, E. & J.M. Coronado-Blanco 2002. Artrópodos terrestres de los estados de Tamaulipas y Nuevo León, México. Serie Publicaciones Cientificas No. 4:1-376. (distribution); Ruíz-Cancino et al., 2013Ruíz-Cancino, E., J.M. Coronado-Blanco, J. Cambero-Campos & A.I. Khalaim 2013. Conocimiento actual de los Ichneumonidae (Hymenoptera) de los estados de Nayarit y Sinaloa, México. Entomología mexicana 12 (2):1420-1425. (distribution).
Atopognathus collaris Cushman, 1919:117, ♂♀. Holotype ♀, Rosslyn, Virginia (U.S.N.M., No. 19178, leg. H.H. Smith). - Cushman, 1919Cushman, R.A. 1919. New genera and species of Ichneumon flies (Hym.). Proceedings of the Entomological Society of Washington 21 (5):112-120. (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.:367 ( listed as synonym of Atopotrophos bucephalus (Cresson, 1868)).