Lophyrus Townsendi Cockerell, 1898:457, ♀. ♀, South Fork, Eagle Creek, White Mountains, N. M., about 8000 feet, Aug. 17, 1898 (leg. C.H.T. Townsend). - As Zadiprion townsendi: - Muesebeck et al., 1951Muesebeck, C.F.W., K.V. Krombein & H.K. Townes 1951. Hymenoptera of America north of Mexico - Synoptic catalog. U.S. Dept. Agr. Monog. 2:1-1420. (distribution); Smith, 1988Smith, D.R. 1988. A synopsis of the sawflies (Hymenoptera: Symphyta) of America south of the United States: introduction, Xyelidae, Pamphiliidae, Cimbicidae, Diprionidae, Xiphydriidae, Siricidae, Orussidae, Cephidae. Systematic Entomology 13:205-261. (distribution); Smith et al., 2012Smith, D.R., G. Sánchez-Martínez & A. Ojeda-Aguilera 2012. A new species of Zadirpion (Hymenoptera: Diprionidae) on Pinus durangensis from Chihuahua, Mexico, and a review of other species of the genus. Proceedings of the Entomological Society of Washington 114 (2):224-237. (distribution).
Diprion grandis Rohwer, 1912:208, ♂♀. Holotype, Crawford, Sioux County, Nebraska (U.S.N.M., No. 14758, leg. M.H. Swenk). - 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.:30 ( listed as synonym of Zadiprion townsendi (Cockerell, 1898)); Smith et al., 2012Smith, D.R., G. Sánchez-Martínez & A. Ojeda-Aguilera 2012. A new species of Zadirpion (Hymenoptera: Diprionidae) on Pinus durangensis from Chihuahua, Mexico, and a review of other species of the genus. Proceedings of the Entomological Society of Washington 114 (2):224-237.:235 ( listed as synonym of Zadiprion townsendi (Cockerell, 1898)).
Neodiprion vallicola Rohwer, 1918:84 Synonymized with Zadiprion townsendi (Cockerell, 1898) by Smith, 1988Smith, D.R. 1988. A synopsis of the sawflies (Hymenoptera: Symphyta) of America south of the United States: introduction, Xyelidae, Pamphiliidae, Cimbicidae, Diprionidae, Xiphydriidae, Siricidae, Orussidae, Cephidae. Systematic Entomology 13:205-261.:228. - Smith et al., 2012Smith, D.R., G. Sánchez-Martínez & A. Ojeda-Aguilera 2012. A new species of Zadirpion (Hymenoptera: Diprionidae) on Pinus durangensis from Chihuahua, Mexico, and a review of other species of the genus. Proceedings of the Entomological Society of Washington 114 (2):224-237.:235 ( listed as synonym of Zadiprion townsendi (Cockerell, 1898)).