Prionus coriarius

Sawhorse ( Prionus coriarius )

The Sawhorse ( Prionus coriarius ) or Gerber Bock is a type of the family of longhorn beetles ( Cerambycidae ).

Sawhorses are 18 to 45 millimeters long. The slightly shiny chitin armor is colored brown to black-brown. On the elytra are three rather weakly developed longitudinal grooves. The pronotum bears on each side three clearly distinct teeth, while both the front and the back edge is a fringe of yellow hair. Remarkable are the long and very powerful sensors which are very strong, a bit weaker cut the male in the female and also thinner.

The nocturnal animals are loners who do not take any food during her life as a beetle. At night they fly to the light, where you can watch most often. By rubbing of hind legs and elytra they can produce chirping sounds. The up to six inches long larval life when they are younger, under the bark of deciduous trees, rare conifers, where they feed on the wood. When they reach a certain age, they settle into the root timber. After three years and a total of fourteen molts they pupate. From the doll slips of finished beetle.