Weevils are a type of beetle belonging to the superfamily Curculionoidea. They are usually small, less than 6 mm (0.24 in), and herbivorous. About 97,000 species of weevils are known. They belong to several families, with most of them in the family Curculionidae. Some other beetles, although not closely related, bear the name "weevil", such as the biscuit weevil, which belongs to the family Ptinidae.
The insect tribe Stromboscerini is part of the weevil family Curculionidae, subfamily Dryophthorinae. It is a small and little-known weevil group. Alonso-Zarazaga & Lyal (1999) treated it as a subfamily.
Dryophthorinae is a weevil subfamily within the family Curculionidae. While it is not universally accepted as distinct from other curculionid subfamilies, at least one major recent revision elevated it to family rank, as Dryophthoridae
Otiorhynchus is a large genus of weevils in the family Curculionidae. Many species of the genus, particularly the black vine weevil and the strawberry root weevil, are important pests, both as larvae and as adults. Larvae feed on plant roots. Adults are flightless with fused elytra and feed at night on plant foliage. In many species of the genus at least some races are polyploid and parthenogenetic, while the rest of the races and species are diploid and bisexual. Otiorhynchus weevils, particularly O. scaber, have been a popular subject for studies of the evolution of parthenogenesis. The genus is native to the Palearctic region. However, sixteen species were inadvertently introduced to North America and have become widespread there.
Sitona is a large genus of weevils in the family Curculionidae native to the Nearctic and Palaearctic regions. Over 100 species have been described. Sitona is easily distinguished from related genera by flat, recumbent scales on the mandibles, by the absence of an oval scar on the mandibles, by short and broad rostrum with a deep, longitudinal, median groove, and by dense scales on the body.
Rhinostomus barbirostris, common name Bottlebrush Weevil or Bearded Weevil, is a species of true weevil family.
Eurynotia is a weevil genus in the tribe Tropiphorini.
Ceutorhynchini is a true weevil tribe in the subfamily Baridinae.
Pachnaeus is a genus of broad-nosed weevils in the family Curculionidae. There are about seven described species in Pachnaeus.
Myllocerus undecimpustulatus, known generally as the Sri Lanka weevil or yellow-headed ravenous weevil, is a species of oriental broad-nosed weevil in the beetle family Curculionidae.
Myllocerus is a genus of oriental broad-nosed weevils in the beetle family Curculionidae. There are at least 330 described species in Myllocerus.
Pseudocneorhinus bifasciatus, the twobanded Japanese weevil, is a species of broad-nosed weevil in the beetle family Curculionidae.
Acanthoscelidius is a genus of minute seed weevils in the beetle family Curculionidae. There are about 14 described species in Acanthoscelidius.
Pityoborus is a genus of typical bark beetles in the family Curculionidae. There are about 12 described species in Pityoborus.
Tanymecus is a genus of broad-nosed weevils in the beetle family Curculionidae. There are at least 100 described species in Tanymecus.
Pagiocerus is a genus of crenulate bark beetles in the family Curculionidae. There is at least one described species in Pagiocerus, P. frontalis.
Cyrtepistomus is a genus of oriental broad-nosed weevils in the beetle family Curculionidae. There are at least 20 described species in Cyrtepistomus.
Egiona is a genus of true weevils in the beetle family Curculionidae. There are at least three described species in Egiona.
Othippia is a genus of true weevils in the beetle family Curculionidae. There are more than 20 described species in Othippia.
Rhinostomus frontalis is a species of weevils, previously placed in a genus called Yuccaborus and known as the yucca weevils.
