Xylonomus rileyi Ashmead, 1889:197, Rohwer, 1920Rohwer, S.A. 1920. The North American Ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proceedings of the United States National Museum 57:405-474.:440, Type (U.S.N.M., No. 2119); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:508, Type ♀ (Washington). Nomen nudum. Nomen nudum.Xylonomus rileyi Ashmead, 1889:197, Rohwer, 1920Rohwer, S.A. 1920. The North American Ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proceedings of the United States National Museum 57:405-474.:440, Type (U.S.N.M., No. 2119); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:508, Type ♀ (Washington). Nomen nudum. Nomen nudum.
Xylonomus rileyi Ashmead, 1890:450 - 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 Xorides rileyi: - Rohwer, 1920Rohwer, S.A. 1920. The North American Ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proceedings of the United States National Museum 57:405-474. (distribution); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676. (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); Porter, 2005Porter, C.C. 2005. New records of Xorides (Hymenoptera: Ichneumonidae: Xoridinae) from Florida. Insecta Mundi 19 (3):187-190. (distribution).
Xylonomus ruficoxis Rohwer, 1913:354, Rohwer, 1920Rohwer, S.A. 1920. The North American Ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proceedings of the United States National Museum 57:405-474.:440, Type (U.S.N.M., No. 15366); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:508, Type ♀ (Washington). Synonymized with Xorides rileyi (Ashmead, 1890) by Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:508. - 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.:393 ( listed as synonym of Xylonomus rileyi Ashmead, 1890). - As Xorides ruficoxis:
Xylonomus lepturae Rohwer, 1913:534, Rohwer, 1920Rohwer, S.A. 1920. The North American Ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proceedings of the United States National Museum 57:405-474.:440, Type (U.S.N.M., No. 15489); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:508, Type ♀ (Washington). - Rohwer, 1920Rohwer, S.A. 1920. The North American Ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proceedings of the United States National Museum 57:405-474.:440 ( listed as synonym of Xorides rileyi (Ashmead, 1890)); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:508 ( listed as synonym of Xorides rileyi (Ashmead, 1890)); 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.:393 ( listed as synonym of Xylonomus rileyi Ashmead, 1890).