Phymatodes testaceus
Variable Beautifully Bock ( Phymatodes testaceus )
The variable Nice buck or Variable pulley block, red-yellow disk block ( Phymatodes testaceus ) is a beetle of the family of longhorn beetles ( Cerambycidae ).
Features
These 8 to 16 millimeters long beetles vary greatly in color. Your elytra may be yellow to brown, black, black and blue, blue, or even purple. The legs of her legs are stalked at the base and thickened clavate to the top of the legs. The pronotum is spherically curved and dark to yellowish red or red. The smaller Poecilium lividum has because of the reddish pronotum and elytra blue-black a certain resemblance to the variables Nice buck.
Synonyms
- Callidium testaceus Linnaeus, 1758
- Callidium italicus Gmelin, 1790
- Callidium ruficollis Fabricius, 1781
- Callidium violaceum Rossi, 1790
Occurrence
The species occurs in Europe, but not in the far north. Also in Small and Middle East, the Caucasus, North Africa and now in North America it is found.
Way of life
It attacks in deciduous forests, especially oak trees but also beech, hornbeam and fruit trees. The larvae develop in dead or dead deciduous trees and eat sharp-edged feeding tunnels under the bark. The development to the imago takes one to two years. Also often happens in stored firewood and firewood. The bugs hide in the day under the bark or in crevices and is active only in the evenings. They can be encountered from June to July.
Damage
The larvae bore numerous, wide nutrition transitions between bast and sapwood. In addition, about four inches deep Puppenwiege in the form of a hook Ganges is created in the sapwood at the end of larval development.
Economic importance and dangers
Large losses of oak trunks are possible with the mass- occurrence. Since the attack is also present in stored firewood, this often leads to irritation of homeowners. However, the risk of contagion in timber does not exist, because the beetle is dependent on berindetes wood.