Crabro alpestris Cameron, 1891:152, ♂. ♂, Mexico, Tepetlapa in Guerrero 3000 feet (leg. H.H. Smith); Bohart, 1976Bohart, R.M. 1976. A review of the Nearctic species of Crabro (Hymenoptera: Sphecidae). Transactions of the American Entomological Society 102 (2):229-287.:245, Holotype ♂ (BMNH). - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:152 (listed); Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Bohart, 1976Bohart, R.M. 1976. A review of the Nearctic species of Crabro (Hymenoptera: Sphecidae). Transactions of the American Entomological Society 102 (2):229-287. (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); Leclercq, 2008Leclercq, J. 2008. Hyménoptères Crabroniens d'Amérique du genre Crabro Fabricius 1775 (Hymenoptera: Crabronidae Crabroninae). Notes fauniques de Gembloux 61 (1-2):75-84. (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).