Rhagium bifasciatum

Yellow Bindiger Zangenbock ( Rhagium bifasciatum )

The Yellow Cohesive Zangenbock, also two Bindiger Zangenbock or two lane Zangenbock ( Rhagium bifasciatum ) is a beetle of the family of longhorn beetles ( Cerambycidae ).

Description

The beetles are 12 to 23 millimeters long, their antennae are relatively short, as with all pliers goats. There is a more pronounced spike on both sides of the pronotum. The body is black, the elytra are black inside and outside reddish brown. Normally, each wing-cover bears two slanted, yellowish white napkins. Sometimes the rear or the front missing, and for once the elytra bear no napkins. There are eleven known clearly distinguishable variations.

Occurrence

The Yellow Cohesive Zangenbock inhabited most of Europe. In the West it is more common and is missing in the North East all. In addition, it is found in Asia Minor and the Caucasus to Armenia. It prefers low mountain ranges, but can also rise up in subalpine situations.

Way of life

The larvae live in rotten stumps and logs of spruce and pine trees, sometimes of beech, oak and other deciduous trees. They thus belong to the decomposers of dead wood. The development period is usually two years. In contrast to related species such as the shot block and the Schwarzfleckigen Zangenbock the larva builds no Puppenwiege under the bark, but pupates in rotten wood.

The beetles hatch in the fall and winter in her hiding place. From the end of April, they come forth. They are diurnal and fly to July in clearings and forest trails or walk on the trunks and branches. Occasionally they also visit flowers.