Mutilla frigida Smith, 1855:60, ♀. ♀, Arctic America (The Great Bear Lake) (B.M., leg. Sir John Richardson); 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.:389, Type ♀ (British Museum of Natural History, London). - As Pseudomethoca frigida: - 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), 388 (comb. nov.); Krombein, 1950Krombein, K.V. 1950. An annotated list of wasps from Nags Head and the Kill Devil Hills (Hymenoptera Aculeata). Journal of the Elisha Mitchell Scientific Society 65:262-272. (distribution); Hertz, 2007Hertz, J.C. 2007. Velvet Ants, Mutillidae (Insecta: Hymenoptera). :1-11. (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 Pseudomethoca frigida frigida: - Krombein, 1963Krombein, K.V. 1963. Natural history of Plummers Island, Maryland. XVII. Annotated list of the wasps (Hymenoptera: Bethyloidea, Scolioidea, Vespoidea, Pompiloidea, Sphecoidea). Proceedings of the Biological Society of Washington 76:255-280. (distribution). - As Sphaerophthalma frigida:
Mutilla canadensis Blake, 1871:252 Synonymized with Pseudomethoca frigida (Smith, 1855) 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.:388. - 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); 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); 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.:109 ( listed as synonym of Pseudomethoca frigida (Smith, 1855)). - As Pseudomethoca canadensis: - 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). - As Sphaerophthalma canadensis: - Blake, 1886Blake, C. 1886. Monograph of the Mutillidae of North America. Transactions of the American Entomological Society 13:179-286. (distribution).
Photopsis Cressoni Fox, 1890:138, ♂. Holotype ♂, Camden County, N. J., Sept. 9, 1890. - 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.:109 ( listed as synonym of Pseudomethoca frigida (Smith, 1855)). - As Photopsis cressonii: - Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300.:224 ( listed as synonym of Mutilla canadensis Blake, 1871). - As Phytopsis cressoni: - As Phytopsis cressoni: - As Pseudomethoca cressonii: - Ashmead, 1896Ashmead, W.H. 1896. Descriptions of new parasitic Hymenoptera. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 23:179-234. (distribution).
Sphaerophthalma alveolata Provancher, 1895:110 - Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300.:224 ( listed as synonym of Mutilla canadensis 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.:109 ( listed as synonym of Pseudomethoca frigida (Smith, 1855)).Sphaerophthalma alveolata Provancher, 1895:110 - Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300.:224 ( listed as synonym of Mutilla canadensis 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.:109 ( listed as synonym of Pseudomethoca frigida (Smith, 1855)).
Mutilla neojerseiensis Dalla Torre, 1897:65, no descr. Replacement name for Phytopsis cressoni Fox, 1890 by Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:65 (nec Blake). - 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.:224 ( listed as synonym of Mutilla canadensis 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.:109 ( listed as synonym of Pseudomethoca frigida (Smith, 1855)).