Pompilus regalis Smith, 1862:396, ♀. ♀, Mexico (F. Smith's Collection); Evans, 1954Evans, H.E. 1954. The genus Psorthaspis on the Mexican Central Plateau (Hymenoptera, Pompilidae). American Museum Novitates 1662:1-18.:8, Allotype ♂, Villa Guadalupe, Jalisco, about 25 kilometers north of Tepatitlán, July 26, 1951 (American Museum of Natural History, leg. P.D. Hurd); Evans, 1954Evans, H.E. 1954. The genus Psorthaspis on the Mexican Central Plateau (Hymenoptera, Pompilidae). American Museum Novitates 1662:1-18.:8, Holotype ♀, Villa Guadalupe, Jalisco, about 25 kilometers north of Tepatitlán, July 26, 1951 (American Museum of Natural History, leg. P.D. Hurd); Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442.:100, Psesiallotype ♂ (MCZ); Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442.:99, Type ♀ (BMNH, no. 19,306). - Cresson, 1867Cresson, E.T. 1867. Notes on the Pompilidæ of North America, with descriptions of new species. Transactions of the American Entomological Society 1 (1867/1868):85-150. (distribution), 94 (listed); Cresson, 1869Cresson, E.T. 1869. Notes on Mexican Pompilidae with descriptions of new species. The Boston Society of Natural History, Proceedings 12:366-380. (distribution), 375 (listed); Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:200 (listed); Cameron, 1893Cameron, P. 1893. Biologia Centrali-Americana. Insecta. Hymenoptera. (Fossores) Vol. II. :177-257. (distribution), 200 (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), 315 (listed). - As Psorthaspis regalis: - Evans, 1954Evans, H.E. 1954. The genus Psorthaspis on the Mexican Central Plateau (Hymenoptera, Pompilidae). American Museum Novitates 1662:1-18. (distribution), 6 (comb. nov.); Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442. (distribution); Vanoye-Eligio et al., 2021Vanoye-Eligio, M., M. del C. Gómez-Camal, B. del R. Martín-Canché, M. Rosas-Mejía, J.V. HortaVega & V. Vanoye-Eligio 2021. Current knowledge of the family Pompilidae (Hymenoptera: Vespoidea) in Mexico: diversity and geographical distribution. Zootaxa 5071 (4):505-536. (distribution); Fernández et al., 2022Fernández, F., J. Rodriguez, C. Waichert, B. Decker & J. Pitts 2022. Twenty two years later: An updated checklist of Neotropical spider wasps (Hymenoptera: Pompilidae). Zootaxa 5116 (4):451-503. (distribution).
Psorthaspis banksi Bradley, 1944:55, ♀. Holotype ♀, Orizaba, Mexico (Acad. Nat. Sci. Phila.); Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442.:99, Type ♀ (ANSP). Synonymized with Psorthaspis regalis (Smith, 1862) by Evans, 1954Evans, H.E. 1954. The genus Psorthaspis on the Mexican Central Plateau (Hymenoptera, Pompilidae). American Museum Novitates 1662:1-18.:6. - Bradley, 1944Bradley, J.C. 1944. A preliminary revision of the Pompilinae (exclusive of the tribe Pompilini) of the Americas (Hymenoptera: Pompilidae). Transactions of the American Entomological Society 70:23-157.:37 (key female); Evans, 1966Evans, H.E. 1966. A revision of the Mexican and central American spider wasps of the subfamily Pompilinae (Hymenoptera: Pompilidae). Memoirs of the American Entomological Society :1-442.:99 ( listed as synonym of Psorthaspis regalis (Smith, 1862)); Vanoye-Eligio et al., 2021Vanoye-Eligio, M., M. del C. Gómez-Camal, B. del R. Martín-Canché, M. Rosas-Mejía, J.V. HortaVega & V. Vanoye-Eligio 2021. Current knowledge of the family Pompilidae (Hymenoptera: Vespoidea) in Mexico: diversity and geographical distribution. Zootaxa 5071 (4):505-536. (distribution); Fernández et al., 2022Fernández, F., J. Rodriguez, C. Waichert, B. Decker & J. Pitts 2022. Twenty two years later: An updated checklist of Neotropical spider wasps (Hymenoptera: Pompilidae). Zootaxa 5116 (4):451-503. (distribution).