Elm weevil
| Elm weevil | ||||||||||||
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Dutch elm weevil ( Magdalis armigera ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Magdalis armigera | ||||||||||||
| ( Geoffrey , 1785) |
The elm weevil ( Magdalis armigera ) is a beetle from the family of the weevils (Curculionidae).
features
The beetles are 2.5–4.5 mm long. The beetles have a black, matt basic color. Fine rows of dots run over the wing covers . These are much narrower than the spaces in between. The sides of the pronotum are almost parallel. On the sides of the pronotum, the beetles each have a small, strong, laterally protruding tooth. This is larger and more directed forward than related beetles. The trunk (rostrum) is curved. In the males this is significantly shorter than the pronotum, in the females only slightly shorter. The inner edge of the anterior rails (tibia) is double-indented.
distribution
The beetle species is common in the western Palearctic . It is widespread in Europe but is absent on the Irish island . To the east, the occurrence extends into the Caucasus and Siberia . The beetle species is tied to areas with elm stands. In Central Europe, the beetles are common in certain areas.
Way of life
Elms ( ulmus ) serve as the host plant of the beetle species . The eggs are laid on the branches of the trees. The hatched larvae initially develop under the bark, later they drill deep into the wood, where they then pupate . The adult beetles can be seen from mid-April to late June. Since their host plants, the elms, are declining, this could have an impact on the further population development of the beetle species.
Individual evidence
- ↑ a b c d e f g h Arved Lompe: Beetles of Europe - Magdalis . www.coleonet.de. Accessed April 30, 2020.
- ↑ a b Magdalis armigera at Fauna Europaea. Accessed April 30, 2020
Web links
- Magdalis armigera at www.naturespot.org.uk
- Elm weevil at www.insektenbox.de
- Magdalis armigera at www.biolib.cz
- www.kerbtier.de