Tachytes validus Cresson, 1872:216, ♂♀. 3 ♂♀, Texas (leg. Belfrage). - Fox, 1892Fox, W.J. 1892. Monograph of the North American species of Tachytes. Transactions of the American Entomological Society 19:234-252. (distribution); Ashmead, 1894Ashmead, W.H. 1894. Notes on cotton insects found in Mississippi. Insect Life 7 (3):240-247. (distribution); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Banks, 1942Banks, N. 1942. Notes on the United States species of Tachytes. Bulletin of the Museum of Comparative Zoology 89:395-436. (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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution).
Tachytes breviventris Cresson, 1873:216 Synonymized with Tachytes validus Cresson, 1872 by Banks, 1942Banks, N. 1942. Notes on the United States species of Tachytes. Bulletin of the Museum of Comparative Zoology 89:395-436.:410. - Fox, 1892Fox, W.J. 1892. Monograph of the North American species of Tachytes. Transactions of the American Entomological Society 19:234-252. (distribution), 251 ( listed as synonym of Tachytes validus Cresson, 1872); 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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1624 ( listed as synonym of Tachytes validus Cresson, 1872).
Tachytes calcaratus Fox, 1892:239, ♂♀. U. S. National Museum, Florida, New Jersey, Montana (?). - Fox, 1892Fox, W.J. 1892. Monograph of the North American species of Tachytes. Transactions of the American Entomological Society 19:234-252. (distribution); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Banks, 1942Banks, N. 1942. Notes on the United States species of Tachytes. Bulletin of the Museum of Comparative Zoology 89:395-436. (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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1624 ( listed as synonym of Tachytes validus Cresson, 1872).
Tachytes calcaratiformis Rohwer, 1909:204 - Banks, 1942Banks, N. 1942. Notes on the United States species of Tachytes. Bulletin of the Museum of Comparative Zoology 89:395-436. (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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1624 ( listed as synonym of Tachytes validus Cresson, 1872).
Tachytes calcaratiformis coloradensis Banks, 1942:411, ♂♀. Holotype, Boulder, Colorado, August (M.C.Z., no. 25629, leg. Carpenter). - 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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1624 ( listed as synonym of Tachytes validus Cresson, 1872).
Tachytes belfragei Banks, 1942:411, ♀. Holotype ♀, Texas (M.C.Z., no. 25630, leg. Belfrage). - 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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1624 ( listed as synonym of Tachytes validus Cresson, 1872).
Tachytes quadrifasciatus Dreisbach, 1948:151 - 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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1624 ( listed as synonym of Tachytes validus Cresson, 1872).