Bembex Belfragei Cresson, 1872:220, ♂. 5 ♂♂, Texas (leg. Belfrage). - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:503 ( listed as synonym of Bembex cressonii Handlirsch, 1893). - As Bembix belfragei: - Parker, 1917Parker, J.B. 1917. . 1-155. (distribution); Parker, 1929Parker, J.B. 1929. A generic revision of the fossoriel wasps of the tribes Stizini and Bembicini, with notes and descriptions of new species. Proceedings of the United States National Museum 75:1-203. (distribution).
Bembex Cressonis Handlirsch, 1893:792, ♂♀ Replacement name for Bembex belfragei Cresson, 1872 by Handlirsch, 1893Handlirsch, A. 1893. Monographie der mit Nysson und Bembex verwandten Grabwespen. VII. (Schluss). Sitzber. Akad. Wiss. Wien Abt. 1 1:657-942, 6 Taf.:792. - Handlirsch, 1893Handlirsch, A. 1893. Monographie der mit Nysson und Bembex verwandten Grabwespen. VII. (Schluss). Sitzber. Akad. Wiss. Wien Abt. 1 1:657-942, 6 Taf. (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).