Mutilla contumax Cresson, 1865:437, ♀. 2 ♀♀, Colorado Territory, 1864 (leg. Mr. James Ridings). - Blake, 1879Blake, C.A. 1879. Catalogue of the Mutillidae of North America, with descriptions of new species. Transactions of the American Entomological Society 7:243-254. (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); Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300. (distribution); Melander, 1903Melander, A.L. 1903. Notes on North American Mutillidae, with descriptions of new species. Transactions of the American Entomological Society 29 (4):291-330. (distribution). - As Ephuta contumax: - Cockerell, 1898Cockerell, T.D.A. 1898. Contributions to the entomology of New Mexico. Proc. Davenport Acad. nat. Sci. 7:139-148. (distribution). - As Pseudomethoca contumax: - Mickel, 1925Mickel, C.E. 1925. A revision of the mutillid wasps of the genera Myrmilloides and Pseudomethoca occuring in America North of Mexico. Proceedings of the United States National Museum 64 (15):1-52. (distribution); Mickel, 1935Mickel, C.E. 1935. Descriptions and records of Nearctic mutillid wasps of the genera Myrmilloides and Pseudomethoca. Transactions of the American Entomological Society 61:383-398. (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); Pagliano et al., 2020Pagliano G., D.J. Brothers, R. Cambra, A.S. Lelej, P. Lo Cascio, M.M. Palmerini, P.L. Scaramozzino, K.A. Williams & M. Romano 2020. Checklist of names in Mutillidae (Hymenoptera), with illustrations of selected species. Bolletino del Museo Regionale di Scienze naturali Torino 36 (1-2):5-425. (distribution). - As Sphaerophthalma contumax: - Blake, 1886Blake, C. 1886. Monograph of the Mutillidae of North America. Transactions of the American Entomological Society 13:179-286. (distribution); Cockerell & Fox, 1897Cockerell, T.D.A. & W.J. Fox 1897. New fossorial Hymenoptera from New Mexico. Proceedings of the Academy of Natural Sciences of Philadelphia 49:135-141. (distribution).
Mutilla microphthalma Gerstäcker, 1874:64, ♀.Mexico (Mus. Berol.); Mickel, 1935Mickel, C.E. 1935. Descriptions and records of Nearctic mutillid wasps of the genera Myrmilloides and Pseudomethoca. Transactions of the American Entomological Society 61:383-398.:393, Type ♀ (Zoologische Museum der Universität, Berlin, no. 6628). Synonymized with Pseudomethoca contumax (Cresson, 1865) by Mickel, 1935Mickel, C.E. 1935. Descriptions and records of Nearctic mutillid wasps of the genera Myrmilloides and Pseudomethoca. Transactions of the American Entomological Society 61:383-398.:393. - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (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.:1302 ( listed as synonym of Pseudomethoca contumax (Cresson, 1865)); Pagliano et al., 2020Pagliano G., D.J. Brothers, R. Cambra, A.S. Lelej, P. Lo Cascio, M.M. Palmerini, P.L. Scaramozzino, K.A. Williams & M. Romano 2020. Checklist of names in Mutillidae (Hymenoptera), with illustrations of selected species. Bolletino del Museo Regionale di Scienze naturali Torino 36 (1-2):5-425.:108 ( listed as synonym of Pseudomethoca contumax (Cresson, 1865)). - As Sphaerophthalma microphthalma: - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:364 (listed); Cameron, 1895Cameron, P. 1895. Biologia Centrali-Americana. Insecta. Hymenoptera. (Fossores) Vol. II. :330-378. (distribution). - As Sphaerophthalma microphthalma: - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:364 (listed); Cameron, 1895Cameron, P. 1895. Biologia Centrali-Americana. Insecta. Hymenoptera. (Fossores) Vol. II. :330-378. (distribution).