Mutilla bugabensis Cameron, 1894:299, ♀. ♀, Panama, Bugaba (leg. Champion); Quintero & Cambra, 2001Quintero, A.D. & R.A. Cambra 2001. On the identity of Scaptopoda F. Lynch Arribálzaga, new taxonomic changes and new distribution records for neotropical Mutillidae (Hymenoptera), with notes on their biology. Transactions of the American Entomological Society 127 (3):291-304.:297, Holotype ♀ (BMNH, type 15.1019). - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:299 (listed); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution). - As Ephuta bugabensis: - Quintero & Cambra, 2001Quintero, A.D. & R.A. Cambra 2001. On the identity of Scaptopoda F. Lynch Arribálzaga, new taxonomic changes and new distribution records for neotropical Mutillidae (Hymenoptera), with notes on their biology. Transactions of the American Entomological Society 127 (3):291-304. (distribution); Añino et al., 2020Añino, Y.J., R.A. Cambra, D.M. Windsor & K.A. Williams 2020. Seasonal and annual abundance of Ephuta wasp (Hymenoptera: Mutillidae) in Panama. Revista de Biología Tropical (International Journal of Tropical Biology and Conservation) 68 (2):573-579. (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).
Ephuta scutellata Schuster, 1945:200, Quintero & Cambra, 2001Quintero, A.D. & R.A. Cambra 2001. On the identity of Scaptopoda F. Lynch Arribálzaga, new taxonomic changes and new distribution records for neotropical Mutillidae (Hymenoptera), with notes on their biology. Transactions of the American Entomological Society 127 (3):291-304.:297, Holotype ♂ (USNM). Synonymized with Ephuta bugabensis (Cameron, 1894) by Quintero & Cambra, 2001Quintero, A.D. & R.A. Cambra 2001. On the identity of Scaptopoda F. Lynch Arribálzaga, new taxonomic changes and new distribution records for neotropical Mutillidae (Hymenoptera), with notes on their biology. Transactions of the American Entomological Society 127 (3):291-304.:297. - 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.:207 ( listed as synonym of Ephuta bugabensis (Cameron, 1894)).