The Curculionidae are a family of weevils, commonly called snout beetles or true weevils. They are one of the largest animal families with 6,800 genera and 83,000 species described worldwide. They are the sister group to the family Brentidae.
Weevils are beetles belonging to the superfamily Curculionoidea, known for their elongated snouts. They are usually small – less than 6 mm in length – and herbivorous. Approximately 97,000 species of weevils are known. They belong to several families, with most of them in the family Curculionidae. It also includes bark beetles, which while morphologically dissimilar to other weevils in lacking the distinctive snout, is a subfamily of Curculionidae. Some other beetles, although not closely related, bear the name "weevil", such as the biscuit weevil, which belongs to the family Ptinidae.
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.
The Entiminae are a large subfamily in the weevil family Curculionidae, containing most of the short-nosed weevils, including such genera as Entimus, Otiorhynchus, Phyllobius, Sitona, and Pachyrrhynchus. In comparison with their stunning diversity, only a few of these weevils are notorious pests of major economic importance. Entimines are commonly encountered in the field, including urban environments, and abundant in entomological collections.
Entimus is a genus of broad-nosed weevils belonging to the family true weevil and the Entiminae subfamily.
Entimini is a Neotropical weevil tribe in the subfamily Entiminae that includes 46 described species.
Eustylini is a primarily Neotropical weevil tribe in the subfamily Entiminae.
Peritelini is a weevil tribe in the subfamily Entiminae.
Sciaphilini is a weevil tribe in the subfamily Entiminae.
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. It damages crops and is resistant to controls. It has spread.
Myllocerus is a genus of oriental broad-nosed weevils in the beetle family Curculionidae. There are at least 330 described species in Myllocerus.
Naupactus cervinus, the Fuller rose beetle, is a species of broad-nosed weevil in the family Curculionidae.
Otiorhynchus crataegi, the privet weevil, is a species of broad-nosed weevil in the beetle family Curculionidae.
Tropiphorus elevatus is a species of broad-nosed weevil in the beetle family Curculionidae.
Tanymecus is a genus of broad-nosed weevils in the beetle family Curculionidae. There are at least 100 described species in Tanymecus.
Neoptochus is a genus of oriental broad-nosed weevils in the beetle family Curculionidae. There is at least one described species in Neoptochus, N. adspersus.
Pantomorus is a genus of broad-nosed weevils in the beetle family Curculionidae. There are more than 40 described species in Pantomorus.
Brachyolus is a genus of broad-nosed weevil in the family Curculionidae.
