Sphex aztecus Saussure, 1867:38, ♀. ♀, Mexico temperata. - 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); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution). - As Chlorion aztecum: - 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); Fernald, 1942Fernald, H.T. 1942. Annotated list of Florida Sphecinae (Hym., Sphecidae). Entomological News 53 (10):286-291. (distribution). - As Chlorion aztecum aztecum: - Krombein, 1950Krombein, K.V. 1950. An annotated list of wasps from Nags Head and the Kill Devil Hills (Hymenoptera Aculeata). Journal of the Elisha Mitchell Scientific Society 65:262-272. (distribution). - As Isodontia azteca: - Krombein, 1963Krombein, K.V. 1963. Natural history of Plummers Island, Maryland. XVII. Annotated list of the wasps (Hymenoptera: Bethyloidea, Scolioidea, Vespoidea, Pompiloidea, Sphecoidea). Proceedings of the Biological Society of Washington 76:255-280. (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); 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). - As Sphex azteca: - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:35 (listed); Cameron, 1889Cameron, P. 1889. Biologia Centrali-Americana. Insecta. Hymenoptera. (Fossores) Vol. II. :34-64. (distribution).
Sphex robusta Cameron, 1889:36, ♂♀.Mexico, Atoyac in Vera Cruz (leg. Schumann);Temax in North Yucatan (leg. Gaumer). - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:36 (listed); Fernald, 1942Fernald, H.T. 1942. Annotated list of Florida Sphecinae (Hym., Sphecidae). Entomological News 53 (10):286-291.:287 ( listed as synonym of Chlorion aztecum (Saussure, 1867)). - As Sphex robustus: - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (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.:73 ( listed as synonym of Isodontia azteca (Saussure, 1867)).