Tachytes parvus Fox, 1892:249, ♂. 2 ♂♂, Camden County, N. J., Aug. 31, 1890. - 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 arizonicus Banks, 1942:429, ♀. Holotype ♀, Tempe, Arizona (M.C.Z., no. 25640, leg. Bequaert). - 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.:1626 ( listed as synonym of Tachytes parvus Fox, 1892).
Tachytes pattoni Banks, 1942:428, ♀. Holotype ♀, Miami, Florida, March (M.C.Z., no. 25639, leg. A.E. Wight). - Banks, 1942Banks, N. 1942. Notes on the United States species of Tachytes. Bulletin of the Museum of Comparative Zoology 89:395-436. (distribution).