Mutilla Copano Blake, 1871:232, ♂. ♂, Texas (leg. Belfrage). - Cresson, 1872Cresson, E.T. 1872. Hymenoptera Texana. Transactions of the American Entomological Society 4:153-292. (distribution); 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); Blake, 1886Blake, C. 1886. Monograph of the Mutillidae of North America. Transactions of the American Entomological Society 13:179-286. (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 copano: - Bradley, 1916Bradley, J.C. 1916. Contributions toward a monograph of the Mutillidae and their allies of America north of Mexico. Transactions of the American Entomological Society 42 (2):187-198. (distribution); Schuster, 1951Schuster, R.M. 1951. A revision of the genus Ephuta (Mutillidae) in America North of Mexico. Journ. N.Y. Ent. Soc. 59 (1):1-43. (distribution); Krombein, 1958Krombein, K.V. 1958. Superfamily Scolioidea. In: Krombein, K.V. (Ed.). Hymenoptera of America North of Mexico - Synoptic Catalog. Washington: U.S. Department of Agriculture. Agriculture Monograph No. 2. First Supplement, 305 pp. 101-108. (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).
Mutilla susura Melander, 1903:324, ♂. Holotype ♂, Galveston, Texas, June 7, 1900 (leg. Melander). Synonymized with Ephuta copano (Blake, 1871) by Krombein, 1958Krombein, K.V. 1958. Superfamily Scolioidea. In: Krombein, K.V. (Ed.). Hymenoptera of America North of Mexico - Synoptic Catalog. Washington: U.S. Department of Agriculture. Agriculture Monograph No. 2. First Supplement, 305 pp. 101-108.:105. - 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.:1284 ( listed as synonym of Ephuta copano (Blake, 1871)); 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.:208 ( listed as synonym of Ephuta copano (Blake, 1871)). - As Ephuta susura: - Bradley, 1916Bradley, J.C. 1916. Contributions toward a monograph of the Mutillidae and their allies of America north of Mexico. Transactions of the American Entomological Society 42 (2):187-198. (distribution).