Pseudagenia isthmica Cameron, 1891:165, ♀. ♀, Panama, Volcan de Chiriqui 4000 to 6000 feet (leg. Champion); Evans, 1974Evans, H.E. 1974. A review of the species of Dipogon occurring in Central America, Mexico, and extreme southwestern United States (Hymenoptera, Pompilidae). Transactions of the American Entomological Society 100:29-51.:36, Type ♀ (British Museum, no. 19.327). Synonymized with Dipogon calipterus nubifer (Cresson, 1869) by Evans, 1974Evans, H.E. 1974. A review of the species of Dipogon occurring in Central America, Mexico, and extreme southwestern United States (Hymenoptera, Pompilidae). Transactions of the American Entomological Society 100:29-51.:36. - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:165 (listed). - As Dipogon isthmica: - As Dipogon itshmica: - 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). - As Pseudagenia isthmia: - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution), 204 (listed). - As Pseudagenia isthmia: - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution), 204 (listed).