Philanthus ventilabris Fabricius, 1798:268,Carolina (leg. Bose). - 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); Cresson, 1865Cresson, E.T. 1865. Monograph of the Philanthidae of North America. Proceedings of the Entomological Society of Philadelphia 5:85-132. (distribution); Packard, 1866Packard, A.S. 1866. Revision of the fossorial Hymenoptera of North America. Proceedings of the Entomological Society of Philadelphia 6:39-115. (distribution); Cresson, 1872Cresson, E.T. 1872. Hymenoptera Texana. Transactions of the American Entomological Society 4:153-292. (distribution); Cockerell, 1898Cockerell, T.D.A. 1898. Contributions to the entomology of New Mexico. Proc. Davenport Acad. nat. Sci. 7:139-148. (distribution); Viereck & Cockerell, 1904Viereck, H.L. & Cockerell, T.D.A. 1904. The Philanthinae of New Mexico. - II. Journal of the New York Entomological Society 12 (3):129-146. (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 Philanthus vertilabris: - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:131 (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). - As Philanthus vertilabris: - Cameron, 1888-1900Cameron, P. 1888-1900. Biologia Centrali-Americana - Insecta. Hymenoptera. (Fossores) Vol. II. R. H. Porter and Dulau & Co., London. 413pp, 14 pl.:131 (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).
Philanthus frontalis Cresson, 1865:99, ♂. 4 ♂♂, Rocky Moun., Colorado Ter. (Ent. Soc. Philad., leg. Ridings). - Cockerell, 1901Cockerell, T.D.A. 1901. Flower and insect records from New Mexico. Entomological News 12 (2):38-43. (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.:64 ( listed as synonym of Philanthus ventilabris Fabricius, 1798).
Philanthus vertilabris complatus Banks, 1915:406 - 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.:64 ( listed as synonym of Philanthus ventilabris Fabricius, 1798).