Mutilla parvula Blake, 1886:206, ♀.Alabama. - 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.:269 (preoccupied); 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.:1297 ( listed as synonym of Photomorphus myrmicoides (Cocerell, 1895)); 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.:35 ( listed as synonym of Photomorphus myrmicoides (Cocerell, 1895)).
Sphaerophthalma myrmicoides Cockerell, 1895:62, ♀. Holotype ♀, Columbus, Texas (leg. H.F. Wickham). Synonymized with Mutilla parvula Blake, 1886 by Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300.:269.Sphaerophthalma myrmicoides Cockerell, 1895:62, ♀. Holotype ♀, Columbus, Texas (leg. H.F. Wickham). Synonymized with Mutilla parvula Blake, 1886 by Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300.:269. - As Mutilla myrmicoides: - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution), 65 (comb. nov.); Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300. (distribution). - As Photomorphus myrmicoides: - 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 Photopsis myrmicoides: - Bradley, 1916Bradley, J.C. 1916. Contributions toward a monograph of the Mutillidae and their allies of America north of Mexico. III. The Mutillidae of the Eastern United States. Transactions of the American Entomological Society 42 (3):309-336. (distribution).