Agenia orbiculata Smith, 1862:397, ♂♀.Mexico (National Collection). - 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), 376 (listed); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:207 (listed); Bradley, 1944Bradley, J.C. 1944. The generic position of certain Mexican Pompilidae (Hymenoptera), with description of a new genus. Notulae Naturae, The Academy of Natural Sciences of Philadelphia 145:1-12.:7 (listed). - As Cressochilus orbiculatus: - Bradley, 1944Bradley, J.C. 1944. The generic position of certain Mexican Pompilidae (Hymenoptera), with description of a new genus. Notulae Naturae, The Academy of Natural Sciences of Philadelphia 145:1-12.:7 (comb. nov.). - As Pompilus orbiculatus: - 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); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749.:207 (listed); Bradley, 1944Bradley, J.C. 1944. The generic position of certain Mexican Pompilidae (Hymenoptera), with description of a new genus. Notulae Naturae, The Academy of Natural Sciences of Philadelphia 145:1-12.:7 (listed). - As Priocnessus orbiculatus: - Dreisbach, 1960Dreisbach, R.R. 1960. Seventeen new species in the genus Priocnessus (Hymenoptera: Psammocharidae) with keys to males and females of all known Neotropical species. The American Midland Naturalist 63 (2):335-364. (distribution); Dreisbach, 1961Dreisbach, R.R. 1961. Additional new species in the genus Priocnessus Banks (Hymenoptera: Psammocharidae) with photomicrographs of genitalia of all the new males. The American Midland Naturalist 65 (1):215-235. (distribution); Waichert et al., 2012Waichert, C., Rodriguez, J. & J.P. Pitts 2012. Spider wasps (Hymenoptera: Pompilidae) of the Dominican Republic. Zootaxa 3353:1-47. (distribution), 21 (key female); 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 Prionocnemis orbiculatus: - Turner, 1915Turner, R.E. 1915. Family Psammocharidae. The Annals and Magazine of Natural History ser. 8: v. 16:332-335. (distribution). - As Pseudagenia orbiculata: - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:171 (listed); Cameron, 1891Cameron, P. 1891. Biologia Centrali-Americana. Insecta. Hymenoptera. (Fossores) Vol. II. :130-176. (distribution); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution), 207 (listed); Bradley, 1944Bradley, J.C. 1944. The generic position of certain Mexican Pompilidae (Hymenoptera), with description of a new genus. Notulae Naturae, The Academy of Natural Sciences of Philadelphia 145:1-12.:7 (listed).