Vespa pensylvanica Saussure, 1857:117, Carpenter & Kojima, 1997Carpenter, J.M. & J. Kojima 1997. Checklist of the species in the subfamily Vespinae (Insecta: Hymenoptera: Vespidae). Nat Hist Bulletin Ibaraki Univer 1:51-92.:79, Lectotype (Genève); Kimsey & Carpenter, 2012Kimsey, L.S. & J.M. Carpenter 2012. The Vespinae of North America (Vespidae, Hymenoptera). Journal of Hymenoptera Research 28:37-65.:60, Lectotype ♀ (Geneva). - As Vespa pennsylvanica: - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, IX. Vespidae (Diploptera). Guilelmi Engelmann, 181. (distribution). - As Vespula pensylvanica: - Bequaert, 1931Bequaert, J.C. 1931. A tentative synopsis of the hornets and the yellow-jackets (Vespinae; Hymenoptera) of America. Entomologica Americana 12 (2):71-138. (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); Carpenter & Kojima, 1997Carpenter, J.M. & J. Kojima 1997. Checklist of the species in the subfamily Vespinae (Insecta: Hymenoptera: Vespidae). Nat Hist Bulletin Ibaraki Univer 1:51-92. (distribution); Dvorak, L., 2006Dvorak, L. 2006. Oriental Hornet Vespa orientalis Linnaeus, 1771 found in Mexico (Hymenoptera, Vespidae, Vespinae). Ent. Problems 36 (1):80. (distribution); Landolt et al., 2010Landolt, P.J., J.M. Sierra, T.R. Unruh & R.S. Zack 2010. A new species of Vespula, and first record of Vespa crabro L. (Hymenoptera: Vespidae) from Guatemala, Central America. Zootaxa 2629:61-68. (distribution).
Vespa occidentalis Cresson, 1874:100, ♂♀.Nevada (leg. Dr. H.C. Yarrow);New Mexico (leg. Mr. Henshaw); 3 ♂♀; Carpenter & Kojima, 1997Carpenter, J.M. & J. Kojima 1997. Checklist of the species in the subfamily Vespinae (Insecta: Hymenoptera: Vespidae). Nat Hist Bulletin Ibaraki Univer 1:51-92.:79, Lectotype ♀ (Philadelphia); Kimsey & Carpenter, 2012Kimsey, L.S. & J.M. Carpenter 2012. The Vespinae of North America (Vespidae, Hymenoptera). Journal of Hymenoptera Research 28:37-65.:60, Lectotype ♀ (Philadelphia). - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, IX. Vespidae (Diploptera). Guilelmi Engelmann, 181. (distribution); Lewis, 1897Lewis, B.S. 1897. Vespinae of the United States and Canada. Transactions of the Entomological Society of London 24 (2):169-192, 1 pl. (distribution); Cockerell, 1899Cockerell, T.D.A. 1899. Notes on some Hymenoptera. The Canadian Entomologist 31:255-256. (distribution); Cockerell, 1901Cockerell, T.D.A. 1901. Flower and insect records from New Mexico. Entomological News 12 (2):38-43. (distribution); Cockerell, 1902Cockerell, T.D.A. 1902. Flowers and insects in New Mexico. American Naturalist 36 (430):809-817. (distribution); Bequaert, 1931Bequaert, J.C. 1931. A tentative synopsis of the hornets and the yellow-jackets (Vespinae; Hymenoptera) of America. Entomologica Americana 12 (2):71-138.:95 ( listed as synonym of Vespula pensylvanica (Saussure, 1857)); 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.:1520 ( listed as synonym of Vespula pensylvanica (Saussure, 1857)); Carpenter & Kojima, 1997Carpenter, J.M. & J. Kojima 1997. Checklist of the species in the subfamily Vespinae (Insecta: Hymenoptera: Vespidae). Nat Hist Bulletin Ibaraki Univer 1:51-92.:79 ( listed as synonym of Vespa pensylvanica Saussure, 1857).