Sphex caliginosa Klug in Schomburgk, 1848:589, sex not indicated.Britisch-Guiana. - Smith, 1856Smith, F. 1856. Catalogue of Hymenopterous Insects in the Collection of the British Museum. Part IV. Sphegidae, Larridae, and Crabronidae. London. 497 pp. (distribution). - As Chlorion caliginosum: - Fernald, 1906Fernald, H.T. 1906. The digger wasps of North America and the West Indies belonging to the subfamily Chorioninae. Proceedings of the United States National Museum 31:291-423. (distribution). - As Sphex caliginosus: - Kohl, 1890Kohl, F.F. 1890. Die Hymenopterengruppe der Sphecinen. I. Monographie der natürlichen Gattung Sphex Linné (sens. lat.). Annalen des Naturhistorischen Museums in Wien 5:77-194, 317-462. (distribution); Fox, 1893Fox, W.J. 1893. Report on some mexican Hymenoptera, principally from lower California. Proceedings of the California Academy of Sciences ser.2 (4):1-25. (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); Ashmead, 1900Ashmead, W.H. 1900. Report upon the aculeate Hymenoptera of the islands of St. Vincent and Grenada, with additions to the parasitic Hymenoptera and a list of the described Hymenoptera of the West Indies. Transactions of the Entomological Society of London pt. II:207-367. (distribution); Schrottky, 1902Schrottky, C. 1902. Hyménoptères nouveaux de l'Amérique méridionale. . An. Mus. Buenos Aires 7:309-316. (distribution); Berland, 1929Berland, M.L. 1929. Les Sphegidae (Hyménoptères) du Muséum National de Paris. Bulletin du Muséum National d'Histoire Naturelle (Série 2) 1:309-312. (distribution); Simonthomas, 1984Simonthomas, R.T. 1984. Notes on the Hymenoptera Aculeata from St. Martin, Saba, and St. Eustatius. Studies on the fauna of Curaçao and other Caribbean islands 67:92-97. (distribution); Fernández, 1990Fernández, F. 1990. Preliminary observations of sphecids of the Reserva la Macarena, Meta, Colombia. Sphecos 19:23-24. (distribution); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139. (distribution); Perez-Gelabert, 2008Perez-Gelabert, D.E. 2008. Arthropods of Hispaniola (Dominican Republic and Haiti): A checklist and bibliography. Zootaxa 1831:1-530. (distribution); Rasmussen & Asenjo, 2009Rasmussen, C. & A. Asenjo 2009. A checklist to the wasps of Peru (Hymenoptera, Aculeata). ZooKeys 15:1-78. (distribution); Perez-Gelabert, 2020Perez-Gelabert, D.E. 2020. Checklist, bibliography and quantitative data of the arthropods of Hispaniola. Zootaxa 4749:1-668. (distribution); Nava-Bolaños & Osorio-Olvera, 2022Nava-Bolaños, A. & L. Osorio-Olvera 2022. Estado del arte del conocimiento de biodiversidad de los polinizadores de México. Revista Mexicana de Biodiversidad 93:1-77. (distribution).
Sphex erythroptera Cameron, 1888:30, ♂♀.Mexico, Orizaba (leg. H.H. Smith);Temax in North Yucatan (leg. Gaumer);British Honduras, Cayo (leg. Blancaneaux);Guatemala, Las Mercedes 3000 feet, Volcan de Atitlan 2500 to 3500 feet, San Gerónimo (leg. Champion);Costa Rica, Cache (leg. Rogers);Panama, Volcan de Chiriqui 3000 feet (leg. Champion). - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:30 (listed); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:74 ( listed as synonym of Sphex caliginosus Klug in Schomburgk, 1848).