Rhinostomus barbirostris
| Rhinostomus barbirostris | |
|---|---|
 | |
| Museum specimen of Rhinostomus barbirostris | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Curculionidae |
| Subfamily: | Dryophthorinae |
| Tribe: | Rhinostomini |
| Genus: | Rhinostomus |
| Species: | R. barbirostris |
| Binomial name | |
| Rhinostomus barbirostris (Fabricius, 1775) | |
| Synonyms | |
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Rhinostomus barbirostris, common name Bottlebrush Weevil or Bearded Weevil, is a species of true weevil family.
Description
Rhinostomus barbirostris can reach a length of 11–40 millimetres (0.43–1.57 in), excluding beak. It is probably the third largest weevil in the world. The basic color is black. Pronotum is as long as wide and densely punctate. Elytra bear distinct striae and are deeply punctate. Males have a characteristic long reddish gold hairs on the apical portion of the long, straight and dorsally dentate rostrum. Antenna are long and slender. The front tibia have two or more large, sharp teeth on the inner face. The Bearded Weevil shows an interesting sexual polymorphism, as a part of males in each population is smaller than other males and they resemble females.
Distribution
This common and widespread species occurs mainly in Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Mexico and Panama, but it is also present in South America.
References
- Gwannon
- Patricia Vaurie Weevils of the Tribe Sipalini (Coleoptera, Curculionidae, Rhynchophorinae) Part 1. The Genera Rhinostomus and Yuccaborus
- Key to species of Rhinostomus
- The smaller majority