Palaeovespa is an extinct genus of wasp in the Vespidae subfamily Vespinae. The genus currently contains eight species: five from the Priabonian stage Florissant Formation in Colorado, United States, two from the middle Eocene Baltic amber deposits of Europe, and one species from the late Paleocene of France.
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👉 Palaeovespa in the context of Vespidae
The Vespidae are a large (nearly 5000 species), diverse, cosmopolitan family of wasps, including nearly all the known eusocial wasps (such as Polistes fuscatus, Vespa orientalis, and Vespula germanica) and many solitary wasps. Each social wasp colony includes a queen and a number of female workers with varying degrees of sterility relative to the queen. In temperate social species, colonies usually last only one year, dying at the onset of winter. New queens and males (drones) are produced towards the end of the summer, and after mating, the queens hibernate over winter in cracks or other sheltered locations. The nests of most species are constructed out of mud, but polistines and vespines use plant fibers, chewed to form a sort of paper (also true of some stenogastrines). Many species are pollen vectors contributing to the pollination of several plants, being potential or even effective pollinators, while others are notable predators of pest insect species, and a few species are invasive pests.
The subfamilies Polistinae and Vespinae are composed solely of eusocial species, while the Eumeninae, Euparagiinae, Gayellinae, Masarinae and Zethinae are all solitary with the exception of a few communal and several subsocial species. The Stenogastrinae are facultatively eusocial, considering nests may have one or several adult females; in cases where the nest is shared by multiple females (typically, a mother and her daughters) there is reproductive division of labor and cooperative brood care.
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Palaeovespa in the context of Vespinae
The subfamily Vespinae contains the largest and best-known groups of 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 in the Paleocene to Eocene fossil records of North America and Europe. Collectively, the group can be found on all continents except Antarctica, and several of these wasps are invasive species, introduced beyond their native ranges, and can be major pests.