« Back

Gasterocercus depressirostris

Weevil Gasterocercus depressirostris

Description

The size of the adult is from 4 to 11 mm with a spotted pattern on elytra. It is a less abundant species (rare in some places), which is more abundant in more preserved, native forests. On some places it can be numerous. It prefers oak as a host plant. The larva develops in the wood of weakened trees. Mature larva pupate in a cocoon in the wood. The larvae overwinter and adults occur mostly from June to September. It is univoltine species, it has one generation per year.

Symptom

Very round exit holes in wood and in the bark, diameter of about 4 to 5 mm.

Tree Species: Beech, Oak

Part of a plant- attacked: Tree trunk, Branch

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes