Neotiphia crawfordi Allen, 1935:60, ♀. Holotype ♀, Barstow, Tex., October 12 (U.S.N.M., no. 50754, leg. J.C. Crawford); Allen & Krombein, 1963Allen, H.W. & K.V. Krombein 1963. A revision of Neotiphia Malloch and Krombeinia Pate (Hymenoptera: Tiphiidae). Transactions of the American Entomological Society 89 (3/4):211-275.:259, Allotype ♂ (USNM); Allen & Krombein, 1963Allen, H.W. & K.V. Krombein 1963. A revision of Neotiphia Malloch and Krombeinia Pate (Hymenoptera: Tiphiidae). Transactions of the American Entomological Society 89 (3/4):211-275.:259, Type ♀ (USNM, No. 50754). - Allen, 1966Allen, H.W. 1966. A revision of the Tiphiinae (Hymenoptera: Tiphiidae) of Eastern North America. Transactions of the American Entomological Society 92:231-356. (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).
Neotiphia conspicua Allen, 1935:61, ♂. Holotype ♂, Barstow, Tex., October 12 (U.S.N.M., no. 50755, leg. J.C. Crawford). Synonymized with Neotiphia crawfordi Allen, 1935 by Allen & Krombein, 1963Allen, H.W. & K.V. Krombein 1963. A revision of Neotiphia Malloch and Krombeinia Pate (Hymenoptera: Tiphiidae). Transactions of the American Entomological Society 89 (3/4):211-275.:257. - Allen, 1966Allen, H.W. 1966. A revision of the Tiphiinae (Hymenoptera: Tiphiidae) of Eastern North America. Transactions of the American Entomological Society 92:231-356.:346 ( listed as synonym of Neotiphia crawfordi Allen, 1935); 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.:1262 ( listed as synonym of Neotiphia crawfordi Allen, 1935).