| Rhinastus sternicornis | |
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| Rhinastus sternicornis from Brazil | |
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| Species: | R. sternicornis |
| Binomial name | |
| Rhinastus sternicornis Germar, 1824 | |
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Rhinastus sternicornis is a species of beetles belonging to the family Curculionidae.
Rhinastus sternicornis can reach a length of 18–37 millimetres (0.71–1.46 in). This large species has very long legs and a strongly arcuate long beak. The pronotum and elytra are quite variable in granulation. The colour varies from pale to deeper tan or yellowish.
The adults of these beetles can be found from January up to March. They have been reported breeding in bamboos. The females puncture the young shoots and lay one egg in each perforation. The larvae develop in the internodes of bamboos and are considered a pest of these plants.
This species shows a striking sexual dimorphism. In fact the male and the female of this beetle were once believed belonging to different species (respectively to Rhinastus pertusus and Rhinastus sternicornis, actually considered synonyms).
The Curculionidae are the family of the "true" weevils. They are one of the largest animal families, with 6,800 genera and 83,000 species described worldwide.
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. 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 bamboo or gentle lemurs are the lemurs in genus Hapalemur. These medium-sized primates live exclusively on Madagascar. The greater bamboo lemur, formerly known as Hapalemur simus, was considered part of this genus, but is now classified as belonging to the genus Prolemur.
Powderpost beetles are a group of seventy species of woodboring beetles classified in the insect subfamily Lyctinae. These beetles, along with spider beetles, death watch beetles, common furniture beetles, skin beetles, and others, make up the superfamily Bostrichoidea. While most woodborers have a large prothorax, powderpost beetles do not, making their heads more visible. In addition to this, their antennae have two-jointed clubs. They are considered pests and attack deciduous trees, over time reducing the wood to a powdery dust. The damage caused by longhorn beetles is often confused with that of powderpost beetles, but the two groups are unrelated. The larvae of the Cerambycidae are white, straight and generally flat-headed, whereas those of the Bostrichidae are white and C-shaped.
Belidae is a family of weevils, called belids or primitive weevils because they have straight antennae, unlike the "true weevils" or Curculionidae which have elbowed antennae. They are sometimes known as "cycad weevils", but this properly refers to a few species from the genera Parallocorynus and Rhopalotria.
The term mycangium is used in biology for special structures on the body of an animal that are adapted for the transport of symbiotic fungi. This is seen in many xylophagous insects, which apparently derive much of their nutrition from the digestion of various fungi that are growing amidst the wood fibers. In some cases, as in ambrosia beetles, the fungi are the sole food, and the excavations in the wood are simply to make a suitable microenvironment for the fungus to grow. In other cases, wood tissue is the main food, and fungi weaken the defense response from the host plant.
The palm weevil Rhynchophorus ferrugineus is one of two species of snout beetle known as the red palm weevil, Asian palm weevil or sago palm weevil. The adult beetles are relatively large, ranging between two and four centimeters long, and are usually a rusty red colour—but many colour variants exist and have often been classified as different species. Weevil larvae can excavate holes in the trunk of a palm trees up to a metre long, thereby weakening and eventually killing the host plant. As a result, the weevil is considered a major pest in palm plantations, including the coconut palm, date palm and oil palm.
Sternocera is a genus of beetles belonging to the Buprestidae family.
Austroplatypus incompertus is a species of ambrosia beetle belonging to the true weevil family, native to Australia, with a verified distribution in New South Wales and Victoria. It forms colonies in the heartwood of Eucalyptus trees and is the first beetle to be recognized as a eusocial insect. Austroplatypus incompertus is considered eusocial because groups contain a single fertilized female that is protected and taken care of by a small number of unfertilized females that also do much of the work. These beetles appear to be the oldest farming creatures, having domesticated fungi nearly 90 million years ago. The species likely passed on cultivated fungi to other weevils.
Oxyops vitiosa is a species of weevil in the family Curculionidae. Common names include the melaleuca leaf weevil and the melaleuca snout beetle. It feeds on the leaves and shoots of the broad-leaved paper bark tree, Melaleuca quinquenervia, which is endemic to Australia where it grows on seasonally inundated plains and swampland, and was introduced into Florida in order to help drain flooded portions of the Everglades.
Polydrusus formosus is a species of broad-nosed weevil belonging to the family Curculionidae, subfamily Entiminae.
Hylobius transversovittatus is a species of weevil in the family Curculionidae. It is native to the Old World where both adults and larvae feed on purple loosestrife. This plant is regarded as an invasive species in North America and the weevil has been introduced into both the United States and Canada in an effort to control the plant.
Rhinastus is a genus of beetles belonging to the family Curculionidae.
Rhynchophorus bilineatus, common name Black Palm Weevil, is a species of beetles belonging to the family Curculionidae.
Sipalinus gigas is a species of beetles belonging to the family Curculionidae.
Cyrtotrachelus dux, the Bamboo beetle or Long Armed Snout Beetle, is a species of beetles belonging to the family Curculionidae.
Ips is a genus of beetles in the family Curculionidae, the true weevils. They are bark beetles, members of the subfamily Scolytinae. Species are distributed throughout the Northern Hemisphere. Some are known as introduced species in Australia and Africa. Many species are pests of forest trees, especially pines and spruces. They are known commonly as engraver beetles, ips engraver beetles, and pine engravers.
Eupholus azureus is a species of beetles belonging to the family Curculionidae.
Asytesta doriae is a species of beetles belonging to the family Curculionidae.
Cionus hortulanus is a species of weevils belonging to the family Curculionidae, subfamily Curculioninae.
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