Agenia femorata Smith, 1864:265, ♂. ♂, Villa Nova (River Amazon) (National Collection). - Fox, 1897Fox, W.J. 1897. Contributions to a knowledge of the Hymenoptera of Brazil, No. 2. - Pompilidae. Proceedings of the Academy of Natural Sciences of Philadelphia 49:229-283.:236 (listed); Turner, 1915Turner, R.E. 1915. Family Psammocharidae. The Annals and Magazine of Natural History ser. 8: v. 16:332-335.:334 ( listed as synonym of Pseudagenia comparata (Smith, 1873)). - As Pseudagenia femorata: - Fox, 1897Fox, W.J. 1897. Contributions to a knowledge of the Hymenoptera of Brazil, No. 2. - Pompilidae. Proceedings of the Academy of Natural Sciences of Philadelphia 49:229-283. (distribution), 236 (listed).
Pseudagenia Smithii Dalla Torre, 1897:208, no descr. Replacement name for Agenia femorata Smith, 1864 by Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:208 (nec Fabricius). - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Turner, 1915Turner, R.E. 1915. Family Psammocharidae. The Annals and Magazine of Natural History ser. 8: v. 16:332-335.:334 ( listed as synonym of Pseudagenia comparata (Smith, 1873)). - As Auplopus smithi: - Dreisbach, 1963Dreisbach, R.R. 1963. New species of spider wasp, genus Auplopus from the Americas South of the United States (Hymenoptera: Psammocharidae). Proceedings of the United States National Museum 114:137-211. (distribution), 190 (key female), 191 (key male); 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 Auplopus smithii: - Braet et al., 2000Braet, Y., J.A. Cerda & J. Fretey 2000. Note sur quelques insectes récoltés au piège Malaise en Guyane française. Notes faunique de Gembloux 38:3-20. (distribution). - As Pseudagenia smithi: - Schulz, 1906Schulz, W.A. 1906. Spolia Hymenopterologica. Junfermannsche Buchhandlung, Paderborn. 355 pp.:165 (stat. resurr.); Banks, 1944Banks, N. 1944. The Psammocharidae (Hymenoptera) taken at Kartabo and other localities in British Guiana. Zoologica 29:97-112. (distribution), 109 (listed); Banks, 1946Banks, N. 1946. Studies of South American Psammocharidae. Part 1. Bulletin of the Museum of Comparative Zoology at Harvard College 96:311-525. (distribution), 407 (key female), 408 (key male), 411 (listed).