Nematus oligospilus Förster, 1854:284 - 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); Blank, S.M. et al., 2001Blank, S.M., S. Deters, M. Drees, M. Jänicke & E. Jansen 2001. Symphyta. In: Dathe, H., A. Taeger & S.M. Blank (Ed.). Verzeichnis der Hautflügler Deutschlands (Entomofauna Germanica, Band 4). 8-28. (distribution), 15 (distribution); Smith, 2003Smith, D.R. 2003. A synopsis of the sawflies (Hymenoptera: Symphyta) of America south of the United States: Tenthredinidae (Nematinae, Heterarthrinae, Tenthredininae). Transactions of the American Entomological Society 129 (1):1-45. (distribution); Malagón-Aldana et al., 2017Malagón-Aldana, L.A., F. Serna & D.R. Smith 2017. On the natural history of the willow sawfly Nematus oligospilus (Hymenoptera, Tenthredinidae) inhabiting Salix humboldtiana, in Colombia. Journal of Hymenoptera Research 55:189-199. (distribution).
Nematus mendicus Walsh, 1866:261 - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum. Vol. I: Tenthredinidae incl. Uroceridae (Phyllophaga & Xylophaga). G. Engelmann, 459. (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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Nematus trivittatus Norton, 1867:218 - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum. Vol. I: Tenthredinidae incl. Uroceridae (Phyllophaga & Xylophaga). G. Engelmann, 459. (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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Nematus dorsivittatus Cresson, 1880:10, ♀.Nevada (leg. Morrison). - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum. Vol. I: Tenthredinidae incl. Uroceridae (Phyllophaga & Xylophaga). G. Engelmann, 459. (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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Nematus salicivorus Cameron, 1882:194 - 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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Nematus sylvestris Cameron, 1884 - 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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854); Blank, S.M. et al., 2001Blank, S.M., S. Deters, M. Drees, M. Jänicke & E. Jansen 2001. Symphyta. In: Dathe, H., A. Taeger & S.M. Blank (Ed.). Verzeichnis der Hautflügler Deutschlands (Entomofauna Germanica, Band 4). 8-28. (distribution), 15 (distribution). - As Nematus silvestris:
Pteronus koebelei Marlatt, 1896:71 - 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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Pteronidea vanduzeei Rohwer, 1913:280, ♀. Holotype ♀, Chain Bridge, Virginia, April 26, 1912 (U.S.N.M., No. 14796, leg. M.C. van Duzee). - 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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Pteronidea elelea MacGillivray, 1923:162 - 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.:68 ( listed as synonym of Nematus oligospilus Förster, 1854).
Nematus desantisi Smith, 1983:260 - Smith, 2003Smith, D.R. 2003. A synopsis of the sawflies (Hymenoptera: Symphyta) of America south of the United States: Tenthredinidae (Nematinae, Heterarthrinae, Tenthredininae). Transactions of the American Entomological Society 129 (1):1-45.:23 ( listed as synonym of Nematus oligospilus Förster, 1854).