12-631: Many, see text Molytinae is a subfamily of weevils described by Carl Johan Schönherr in 1823. Molytinae includes the following tribes: In many older treatments, the Bagoinae , Cryptorhynchinae , Hyperinae , Lixinae and Mesoptiliinae are included in the Molytinae as "tribus groups", as well as the Itini which are otherwise considered a tribe of the Curculioninae . These genera, among others, belong to
24-539: Is a response to ecological demands of egg deposition. Another example of extreme dimorphism in weevils is that of the New Zealand giraffe weevil . Males measure up to 90 mm (3.5 in) and females 50 mm (2.0 in), although there is an extreme range of body sizes in both sexes. Gonipterinae Gonipterini is a tribe of weevils in the subfamily Curculioninae . The larvae and adults are usually found on eucalyptus trees, where they feed upon
36-432: Is suggested below: Cimberididae Nemonychidae Anthribidae Belidae Attelabidae Caridae Brentidae Curculionidae Rhopalapion longirostre exhibits an extreme case of sexual dimorphism . The female rostrum is twice as long and its surface is smoother than in the male. The female bores egg channels into the buds of Alcea rosea . Thus, the dimorphism is not attributed to sexual selection. It
48-610: The Triassic through to tentatively the Oxfordian , have sometimes been considered weevils. Genera of the family have only been found in three formations in Kazakhstan , with most named in 1993. However, their phylogenetic position is contested, with others considering it part of Archostemata . The interfamilial relationships of Curculionoidea have been generally well resolved. The phylogeny by Li et al. (2023) based on phylogenomic data
60-468: The end of the scape (first antennal segment) in true weevils, and the scape is usually much longer than the other antennal segments. Some exceptions occur, such as Nanophyini , primitive weevils with long scapes and geniculate antennae, while among the true weevils, Gonipterinae and Ramphus have short scapes and little or no "elbow". A 1995 classification system to family level was provided by Kuschel, with updates from Marvaldi et al. in 2002, and
72-417: The family Curculionidae (the true weevils ). 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 leaf beetle subfamily Bruchinae , known as "bean weevils", or the biscuit weevil ( Stegobium paniceum ), which belongs to
84-535: The family Ptinidae . Many weevils are considered pests because of their ability to damage and kill crops. The grain or wheat weevil ( Sitophilus granarius ) damages stored grain , as does the maize weevil ( Sitophilus zeamais ), among others. The boll weevil ( Anthonomus grandis ) attacks cotton crops; it lays its eggs inside cotton bolls and the larvae eat their way out. Other weevils are used for biological control of invasive plants. A weevil's rostrum , or elongated snout, hosts chewing mouthparts instead of
96-823: The few insects outside the Hymenoptera and the Isoptera to do so. Because so many species exist in such diversity, the higher classification of weevils is in a state of flux. They are generally divided into two major divisions, the Orthoceri or primitive weevils, and the Gonatoceri or true weevils ( Curculionidae ). E. C. Zimmerman proposed a third division, the Heteromorphi, for several intermediate forms. Primitive weevils are distinguished by having straight antennae, while true weevils have elbowed (geniculate) antennae. The elbow occurs at
108-534: The piercing mouthparts that proboscis -possessing insects are known for. The mouthparts are often used to excavate tunnels into grains. In more derived weevils, the rostrum has a groove in which the weevil can fold the first segment of its antennae. Most weevils have the ability to fly (including pest species such as the rice weevil ), though a significant number are flightless, such as the genus Otiorhynchus , and others can jump. One species of weevil, Austroplatypus incompertus , exhibits eusociality , one of
120-904: The recognition of the Cretaceous age family Mesophyletidae in 2018 from Burmese amber . The oldest weevils date to the Middle-Late Jurassic boundary, found in the Karabastau Formation of Kazakhstan, the Shar-Teg locality of Mongolia, the Daohugou locality in Inner Mongolia, China, and the Talbragar site in Australia. The extinct family Obrieniidae , with species dating from the Ladinian stage of
132-512: The subfamily Molytinae: [REDACTED] Data related to Molytinae at Wikispecies This Molytinae -related article is a stub . You can help Misplaced Pages by expanding it . Weevil Weevils are beetles belonging to the superfamily Curculionoidea , known for their elongated snouts. They are usually small – less than 6 mm ( 1 ⁄ 4 in) in length – and herbivorous . Approximately 97,000 species of weevils are known. They belong to several families, with most of them in
SECTION 10
#1733085409498144-408: Was achieved using phylogenetic analyses. The accepted families were the primitive weevils, Anthribidae , Attelabidae , Belidae , Brentidae , Caridae , and Nemonychidae , and the true weevils Curculionidae . Most other weevil families were demoted to subfamilies or tribes. Further work resulted in the elevation of Cimberididae to family from placement as a subfamily of Nemonychidae in 2017 and
#497502