What is the weevil known for?
Weevils, also referred to as nunus, 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.
How do you identify Curculionidae?
The head is prolonged and leans forward to fit into the snout, and the antennae protrude from the sides of the snout. The 5-segmented tarsi are noticeable which help with identification. As a common defense mechanism, these beetles will sing by rubbing their elytra against their abdomen.
What are the different types of weevils?
True weevilsGiraffe weevilCylas formicariusAttelabidaeMolytinaeBark beetle
Weevil/Lower classifications
Which insects belong to Curculionidae family?
Curculionidae
- Larva.
- Fungus.
- Genus.
- Insect.
- Beetle.
- Chrysomelidae.
- Weevil.
- Tenebrionidae.
What is the scientific name of weevil?
CurculionoideaWeevil / Scientific name
What is the difference between weevils and beetles?
Weevils are small beetles that have noticeable snouts. They are often lightbulb- or pear-shaped. The immature, legless, grub-like larvae feed on plants. Adult weevils look for shelter in unfavorable weather conditions, especially when it is hot and dry.
What are the disadvantages of weevil?
The Bad News It is in the agricultural sector that they do their most damage, and thus they are tagged as dangerous. Farmers abhor them for their destructive nature. Weevils damage crops like corn, grain, and cotton. Weevils also kill garden plants.
What is the life cycle of a weevil?
The life cycle of the black vine weevil consists of an egg, 6 or 7 larval instars, a pupal instar and the adult beetle. In temperate climates in the Northern hemisphere, the first adult weevils appear around May. They are approximately 7 – 10 mm long, brownish black and have dull yellow spots on their back.
Are there different types of weevils?
What colour are weevils?
With oval indentations in the thorax, grain weevils are black-brown in colour.
What makes beetles different from other insects?
Most insects have wings, and those that do have two pairs. Beetles differ from all other winged insects by having the first pair of wings hardened and thickened. These hard forewings serve as a protective shield for the fragile flying wings, which are folded underneath.
What is a weevil look like?
What damage does weevil cause?
The bean stem weevil (Alcidodes leucogrammus), bores into the base of the stem of French bean (Phaseolus) or cowpea (Vigna) plants and lays a small number of eggs. These hatch in about 6 days to larvae. The larvae feed on the stem tissue and damage the plant, sometimes causing the stem to break off or fall over.