Timberman beetle

Zimmermann Bock ( Acanthocinus aedilis )

The carpenter buck or room (s) or Schneider bock Bock ( Acanthocinus aedilis ) is a beetle of the family of longhorn beetles ( Cerambycidae ).

Features

Zimmermann bucks are 12 to 20 millimeters long. The chitin armor is brown in color. On the top of the beetles with a fine gray-brown hair ( Toment ) are covered, an irregular pattern created by the. Thus it can be seen on bark hardly. On the neck plate that is wider than long and protrudes at the lateral edges of a respective pointed cusps, four, small yellow Tomentflecken are visible. The body is built oblong. The elytra are not long enough so that the rear end part of the abdomen uncovered. 2 slanted dark transverse bands are also visible on the elytra. In females, this is reinforced by the ovipositor. Particularly characteristic of the Beetles are the unusually long probe; in the male they are about five times as long as the body and also in the female they exceed the body length up to twice as much. Both the filamentous sensor and the legs are alternately colored brown and black.

Occurrence

The beetles come in Europe prior to the northern border of the continent. The southern limit of distribution is located at the height of the northern Balkans. Local deposits are found in Ireland and Scotland. Outside of Europe, we find the beetle in Siberia and the Caucasus. Area of ​​distribution and frequency of beetles have been greatly reduced lately. The animals preferably on freshly felled pine logs on, but are also found in other tree stumps. They are found in the lowlands to the mountains in coniferous mixed forests and timber yards.

Way of life

The diurnal animals are mostly found near their food. They feed on pine needles and raffia and bark. By rubbing of pronotum and thorax, the animals are causing chirping noises in the situation. After mating, the female lays 30 to 50 eggs in the bark of dead or fallen pine trees or in their free-standing roots. The hole is drilled with a long ovipositor into the bast. The larvae live during their entire development phase in the bark and feed on the wood of the tree. After several molts it reaches a length of 35 millimeters and pupate in a chrysalis cradle. The beetle emerges in autumn, but wintered in the same wood and crawls until the spring to light.