Scolia Mexicana Saussure, 1858:219, ♀.Mexique. - Saussure & Sichel, 1864Saussure, H. de & J. Sichel 1864. Catalogue des espèces de l'ancien genre Scolia, contenant les diagnoses, les descriptions et la synonymie des espèces, avec des remarques explicatives et critiques. Genève & Paris. 1-350, 2 pl. (distribution); Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:225 (listed); Cameron, 1893Cameron, P. 1893. Biologia Centrali-Americana. Insecta. Hymenoptera. (Fossores) Vol. II. :177-257. (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); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Osten, 2005Osten, T. 2005. Checkliste der Dolchwespen der Welt (Insecta: Hymenoptera, Scoliidae). Ber. d. Naturf. Ges. Augsburg 62:1-62.:38 (listed).
Scolia monticola Cameron, 1893:223, ♂♀. ♂, ♀, Mexico, Chilpancingo 4600 feet, Venta de Zopilote 2800 feet, Amula 6000 feet, Xucumanatlan 7000 feet, and Acapulco, all in Guerrero (leg. H.H. Smith); Bartlett, 19012Bartlett, O.C. 19012. The North American digger wasps of the subfamily Scoliinae. Annals of the Entomological Society of America 5 (4):293-380.:330, The type is probably in the British Museum. Synonymized with Scolia mexicana Saussure, 1858 by Betrem & Bradley, 1964Betrem, J.G. & J.C. Bradley 1964. Annotations on the Genera Triscolia, Megascolia and Scolia (Hymenoptera, Scoliidae) (second part). Zoologische Mededelingen Leiden 40 (11):89-96.:96. - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:223 (listed); Fox, 1896Fox, W. 1896. Contributions to a knowledge of the Hymenoptera of Brazil. No. 1. Scoliidae. Proceedings of the Academy of Natural Sciences of Philadelphia 48:292-307. (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); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1318 ( listed as synonym of Scolia mexicana Saussure, 1858); Osten, 2005Osten, T. 2005. Checkliste der Dolchwespen der Welt (Insecta: Hymenoptera, Scoliidae). Ber. d. Naturf. Ges. Augsburg 62:1-62.:38 ( listed as synonym of Scolia mexicana Saussure, 1858). - As Scolia dubia monticola: - Krombein, 1958Krombein, K.V. 1958. Superfamily Scolioidea. In: Krombein, K.V. (Ed.). Hymenoptera of America North of Mexico - Synoptic Catalog. Washington: U.S. Department of Agriculture. Agriculture Monograph No. 2. First Supplement, 305 pp. 101-108.:107 (hosts [Cotinis texana Casey]).
Scolia nigrescens Bartlett, 1912:331 - Betrem & Bradley, 1964Betrem, J.G. & J.C. Bradley 1964. Annotations on the Genera Triscolia, Megascolia and Scolia (Hymenoptera, Scoliidae) (second part). Zoologische Mededelingen Leiden 40 (11):89-96.:96 ( listed as synonym of Scolia mexicana Saussure, 1858); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1318 ( listed as synonym of Scolia mexicana Saussure, 1858); Osten, 2005Osten, T. 2005. Checkliste der Dolchwespen der Welt (Insecta: Hymenoptera, Scoliidae). Ber. d. Naturf. Ges. Augsburg 62:1-62.:38 ( listed as synonym of Scolia mexicana Saussure, 1858).