Agenia reversa Smith, 1873:448, ♀. ♀, Para (leg. H. W. Bates); Evans, 1969Evans, H.E. 1969. Studies on Neotropical Pompilidae (Hymenoptera) VII. Irenangelus Schulz. Studia Entomologica 12 (fasc. 1-4):417-431.:424, Type ♀ (British Museum, no. 19.787). - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:208 (listed); Kimsey & Wasbauer, 2004Kimsey, L.S. & Wasbauer M.S. 2004. Revision of New World species of the cleptoparasitic pompilid genus Irenangelus Schulz (Hymenoptera: Pompilidae). Journal of the Kansas Entomological Society 77:650-668.:665 (listed). - As Agenia reversus: - Banks, 1947Banks, N. 1947. Studies of South American Psammocharidae. Part 2. Museum of Comparative Zoology at Harvard College, Bulletin 99:371-486.:478 (listed). - As Ageniella reversa: - Banks, 1944Banks, N. 1944. The Psammocharidae (Hymenoptera) taken at Kartabo and other localities in British Guiana. Zoologica 29:97-112. (distribution), 108 (listed). - As Irenangelus reversus: - Turner, 1917Turner, R.E. 1917. Notes on Fossorial Hymenoptera. – XXXI. On Psammocharidae in the British Museum. The Annals and Magazine of Natural History ser. 8: v. 20:357-360. (distribution); Banks, 1947Banks, N. 1947. Studies of South American Psammocharidae. Part 2. Museum of Comparative Zoology at Harvard College, Bulletin 99:371-486. (distribution), 478 (listed); Evans, 1969Evans, H.E. 1969. Studies on Neotropical Pompilidae (Hymenoptera) VII. Irenangelus Schulz. Studia Entomologica 12 (fasc. 1-4):417-431. (distribution); Kimsey & Wasbauer, 2004Kimsey, L.S. & Wasbauer M.S. 2004. Revision of New World species of the cleptoparasitic pompilid genus Irenangelus Schulz (Hymenoptera: Pompilidae). Journal of the Kansas Entomological Society 77:650-668. (distribution), 665 (listed); Rasmussen & Asenjo, 2009Rasmussen, C. & A. Asenjo 2009. A checklist to the wasps of Peru (Hymenoptera, Aculeata). ZooKeys 15:1-78. (distribution); Santos et al., 2015Santos, E.F. dos, Y.C Grandinete & F.B. Noll 2015. Additions to the checklist of Scoliidae, Sphecidae, Pompilidae and Vespidae of Peru, with notes on the endemic status of some species (Hymenoptera, Aculeata). ZooKeys 519:33-48. (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). - As Pseudagenia reversa: - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution), 208 (listed).
Irenangelus hornus Schulz, 1906:180, ♀. ♀, Oyapok in Brasilianisch-Guiana, VI. 1904 (leg. Adolf Ducke). - Turner, 1917Turner, R.E. 1917. Notes on Fossorial Hymenoptera. – XXXI. On Psammocharidae in the British Museum. The Annals and Magazine of Natural History ser. 8: v. 20:357-360.:357 ( listed as synonym of Irenangelus reversus (Smith, 1873)); Pate, 1946Pate, V.S.L. 1946. The generic names of the spider wasps (Psammocharidae olim Pompiloidae) and their type species. Transactions of the American Entomological Society 72:65-137.:91 ( listed as synonym of Irenangelus reversus (Smith, 1873)); Kimsey & Wasbauer, 2004Kimsey, L.S. & Wasbauer M.S. 2004. Revision of New World species of the cleptoparasitic pompilid genus Irenangelus Schulz (Hymenoptera: Pompilidae). Journal of the Kansas Entomological Society 77:650-668.:665 ( listed as synonym of Irenangelus reversus (Smith, 1873)).