Asemum striatum

Dark Bock ( Asemum striatum )

The Dark Bock ( Asemum striatum ) is a beetle of the family of longhorn beetles ( Cerambycidae ). The species is the only one of its kind in Central Europe, where it occurs frequently.

Features

The beetles are 8 to 23 millimeters long. They are colored black, the pronotum is very densely punctured - grained. Centrally impression can be identified, wherein the widest is at the rear half. The elytra are very dense point-like structured and wrinkled. You have two to four longitudinal ribs. Less commonly they are black instead of brown or reddish, brown or colored or yellow only at the edges. The probes are shorter than half the length of the body, the legs are also short.

Occurrence and habitat

The species is widespread in the Palaearctic and also occurs in the far north of Europe. The species is distributed locally in England and Scotland. In Southern Europe they are found in the higher mountain areas, as in the north. They settled coniferous forests, especially pine forests from the lowlands to the highlands to the tree line.

Way of life

The adults hide during the day under bark and fly only from the late afternoon and evening. They occur from May to August and to have a life expectancy of about 14 days. The larvae prefer to live in freshly cut pine stumps and felled trunks, but also in damaged live trees. Your feeding tunnels have an oval cross -section of 3 times 7 millimeters. The adult beetles emerge from elliptical openings, often also from already wooden constructions.

Documents

• Karl Wilhelm Harde, Frantisek Severa and Edwin Möhn: The Cosmos beetle Guide: The Central European beetles. Franckh-Kosmos Verlags-GmbH & Co. KG, Stuttgart 2000, ISBN 3-440-06959-1.
• Jiri Zahradnik, Irmgard Jung, Dieter Jung et al.: Bug Central and North West Europe. Parey, Berlin 1985, ISBN 3-490-27118-1.