Hornets and Yellowjackets

The subfamily Vespinae contains the largest and best-known eusocial wasps, including true hornets (the genus Vespa), and the "yellowjackets" (genera Dolichovespula and Vespula). The remaining genus, Provespa, is a small, poorly known group of nocturnal wasps from Southeast Asia. One genus, Palaeovespa, has been described from the Eocene fossil record, from Colorado. Collectively, the group can be found on all continents except Antarctica, and several of these wasps are invasive species, introduced beyond their native ranges,...