Rhinusa linariae
| Rhinusa linariae | ||||||||||||
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Rhinusa linariae |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Rhinusa linariae | ||||||||||||
| ( Panzer , 1792) |
Rhinusa linariae is a beetle -type from the family of weevils .
features
The beetles are 2.5 to 3.5 mm in size and have a convex shape. Her black body is covered with white-gray hairs. The pronotum is wider than it is long, the greatest width is in the middle. The trunk (rostrum) is noticeably strongly curved.
distribution
Rhinusa linariae is native to Europe. In the north their occurrence extends to the south of Fennoscandinavia , in the east to central and southern Russia The beetle species is considered to be a possible means of biological pest control of the toadflax introduced into North America . Since 1995 there have been attempts to establish the species in North America.
Way of life
The beetles can be found on various toadflax ( Linaria ) such as toadflax ( Linaria vulgaris ), striped toadflax ( Linaria repens ), Linaria saxatilis and Linaria loeselii . The overwintering beetles can be observed from the end of April / beginning of May. The eggs are laid between mid-May and mid-July. The females make holes in the host plants' roots in which they lay their eggs. The larvae , which go through three stages, develop in the roots and these form galls . The larvae eventually pupate in the galls. At the end of August, the finished beetles leave the roots.
Taxonomy
The following synonyms can be found in the literature :
- Curculio linariae tank , 1792
- Gymnetron linariae ( Panzer , 1792)
Web links
Individual evidence
- ↑ a b c d e f Arved Lompe: Rhinusa - determination table . coleonet.de. Retrieved December 22, 2018.
- ↑ a b c d e f g h Rhinusa linariae (shell) . Ministry of Forests, Lands and Natural Resource Operations, British Columbia. Retrieved December 22, 2018.
- ↑ a b c Rhinusa linariae in Fauna Europaea. Retrieved December 22, 2018
- ↑ Species Rhinusa linariae - Root-gall Weevil . bugguide.net. Retrieved December 22, 2018.
- ↑ Root Galling Weevil - Rhinusa linariae . www.biolib.cz. Retrieved December 22, 2018.