Mutilla amphion Fox, 1899:263, ♂. 2 ♂♂, Nevada. - As Sphaeropthalma amphion: - 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); Pitts et al., 2004Pitts, J.P., F.D. Parker & T.L. Pitts-Singer 2004. A review of the Sphaeropthalma uro species-group (Hymenoptera: Mutillidae), with taxonomic changes. Journal of the Kansas Entomological Society 77 (3):223-234. (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).
Photopsis abstrusa Baker, 1905:113 - 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.:1294 ( listed as synonym of Sphaeropthalma amphion (Fox, 1899)); Pitts et al., 2004Pitts, J.P., F.D. Parker & T.L. Pitts-Singer 2004. A review of the Sphaeropthalma uro species-group (Hymenoptera: Mutillidae), with taxonomic changes. Journal of the Kansas Entomological Society 77 (3):223-234.:230 ( listed as synonym of Sphaeropthalma amphion (Fox, 1899)); 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.:38 ( listed as synonym of Sphaeropthalma amphion (Fox, 1899)).
Photopsis nudata Baker, 1905:114 - 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.:1294 ( listed as synonym of Sphaeropthalma amphion (Fox, 1899)); Pitts et al., 2004Pitts, J.P., F.D. Parker & T.L. Pitts-Singer 2004. A review of the Sphaeropthalma uro species-group (Hymenoptera: Mutillidae), with taxonomic changes. Journal of the Kansas Entomological Society 77 (3):223-234.:230 ( listed as synonym of Sphaeropthalma amphion (Fox, 1899)). - As Photopsis nudatus: - 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.:38 ( listed as synonym of Sphaeropthalma amphion (Fox, 1899)).