Identification Atlas of the Vespidae (Hymenoptera, Aculeata) of the northeastern Nearctic region
Matthias Buck, Stephen A. Marshall, and David K.B. Cheung
Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
This is a very speciose Neotropical genus with numerous species in the Nearctic, Afrotropical and Oriental regions (Carpenter and Garcete-Barrett 2002). There are 30 Nearctic species (north of the Isthmus of Tehuantepec), and six species in America north of Mexico, five of which are restricted to the southernmost United States (Krombein 1979, Rodríguez-Palafox 1996).
Only northeastern Nearctic species: Zethus spinipes Say