• —fungus weevils • —leaf rolling weevils • —primitive weevils • —straight snout weevils • • —true weevils • —pine flower weevils A weevil is a type of from the Curculionoidea. They are usually small, less than 6 mm (0.24 in), and. 97,000 species are in several families, mostly in the family (the ). Some other beetles, although not closely related, bear the name 'weevil', such as the ( Stegobium paniceum), which belongs to the family. Many weevils are considered pests because of their ability to damage and kill crops, but others are used for biological control of invasive plants. The grain or ( Sitophilus granarius) damages stored.

During this time, the rezoning allowances which included vast infrastructure developments on the West side of the district and housing opportunities in 'contextual' housing rezoning created between 1996 and 2005 come to fruition.

The ( Anthonomus grandis) attacks crops. It lays its eggs inside cotton balls, and the larvae eat their way out.

Some weevils have the ability to fly, such as the. One species of weevil,, exhibits, one of the few insects outside the and the to do so. Contents • • • • • • • Taxonomy [ ] 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 (). 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 the end of the (first antennal segment) in true weevils, and the scape is usually much longer than the other antennal segments. Some exceptions occur. Are primitive weevils (with very long ), but have long scapes and geniculate antennae. From the true weevils, and have short scapes and little or no elbow.

Unduh music%26 audio untuk nokia 5130c-2xpresmusic. The most recent classification system to family level was provided by Kuschel, with updates from Marvaldi et al., and was achieved using analyses. The accepted families are the primitive weevils,,,,,, and, and the true weevils. Most other weevil families were demoted to subfamilies or tribes. Weevil species radiation was shown to follow steps in plant evolution upon which the weevils feed; they can vary in color from black to light brown. Some of the features used to distinguish weevil families are: Labrum visible as separate segment to clypeus, Antennae elbowed most, () Trochanters (segment between coxae and femora) as long or longer than coxae including Fore tibia with comb of setae in apical groove opposite tarsal articulation Elytra striate (with longitudinal ridges or grooves),, Rostrum short and broad, some (some including Ithycerus (), and ).

Maxillary palps long and projecting (visible from above at tip of rostrum), Abdominal tergites 6 and 7 without spiracles Gular suture (on ventral part of head) single not double,,. Sexual dimorphism [ ] Rhopalapion longirostre exhibits an extreme case of. The female is twice as long and its surface is smoother than in the male. The female bores egg channels into the buds of. Thus, the dimorphism is not attributed to sexual selection. It is a response to ecological demands of egg deposition.

Phylogeny [ ] A of the Curculionoidea based on 18S and morphological data is suggested below: Gallery [ ] •. Department of Entomology (Penn State University). Zimmerman (1994). Australian weevils (Coleoptera: Curculionidae).

Orthoceri: Anthribidae to Attelabidae: the primitive weevils.:. Kuschel (1995). 'A phylogenetic classification of Curculionoidea to families and subfamilies'.

Farrell (2002).. 51 (5): 761–785.. CS1 maint: Multiple names: authors list () • G. Wilhelm; et al. Gemini cad x9 serial numbers. 'Sexual dimorphism in head structures of the weevil Rhopalapion longirostre: a response to ecological demands of egg deposition'.

104: 642–660. Further reading [ ] • Bright, Donald E.; Bouchard, Patrice (2008). Insects and Arachnids of Canada Series, Part 25. Ottawa: NRC Research Press. External links [ ] • Media related to at Wikimedia Commons.