Cryptus persimilis Cresson, 1864:298, ♀. ♀, Delaware (leg. Dr. Thos. B. Wilson); Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:632, Allotype ♂, Lectotype of Cryptus mundus Provancher (Public Museum, Quebec, Canada, 289); Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:632, Lectotype ♀ (Academy of Natural Sciences, Philadelphia, Pa., No. 1148); Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237, Type ♀ (Philadelphia). - 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); Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661. (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). - As Trachysphyrus persimilis: - Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602. (distribution).
Cryptus picticoxus Walsh, 1873:82, ♂. Holotype ♂; Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:632, Type, appears to have been lost with most of the Walsh collection in the Chicago fire; Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237, Type ♂, destroyed in Chicago fire of 1871. - Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:630 ( listed as synonym of Cryptus persimilis Cresson, 1864); Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237 ( listed as synonym of Trachysphyrus persimilis (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.:463 ( listed as synonym of Cryptus persimilis Cresson, 1864). - As Cryptus picticoxis: [lapsus] - 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 Cryptus picticoxis: [lapsus] - 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).
Cryptus mundus Provancher, 1874:177, Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237, Lectotype ♂ (Quebec). - Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:630 ( listed as synonym of Cryptus persimilis Cresson, 1864); Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237 ( listed as synonym of Trachysphyrus persimilis (Cresson, 1864)).
Cryptus citrinimaculatus Viereck, 1905:320, ♂. Holotype ♂, Dourglas county, Kansas, 900 feet (University of Kansas, leg. F. H. Snow); Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:632, Type (University of Kansas, Lawrence, Kansas); Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237, Type ♂ (Lawrence). - Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661.:630 ( listed as synonym of Cryptus persimilis Cresson, 1864); Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237 ( listed as synonym of Trachysphyrus persimilis (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.:463 ( listed as synonym of Cryptus persimilis Cresson, 1864).
Cryptus associatus Pratt, 1945:633, ♂♀. Allotype ♂, Kaslo, British Columbia, June 3, 1929 (Canadian National Collection, Ottawa, Canada, leg. G.J. Spencer); Holotype ♀, Kaslo, British Columbia, June 13 (U. S. National Museum, Washington, D. C., No. 55432, leg. H.G. Dyar); Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237, Type ♀ (Washington). Synonymized with Trachysphyrus persimilis (Cresson, 1864) by Townes & Townes, 1962Townes, H.K. & M. Townes 1962. Ichneumon-flies of America north of Mexico: 3. Subfamily Gelinae, tribe Mesostenini. Bulletin of the United States National Museum 216 (3):1-602.:237. - Pratt, 1945Pratt, H.D. 1945. Taxonomic studies of nearctic Cryptini (Ichneumonidae, Hymenoptera). The American Midland Naturalist 34 (3):549-661. (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.:463 ( listed as synonym of Cryptus persimilis Cresson, 1864).