Last modified: July 15, 2020, 7:19 p.m.
A common species throughout Belgium.
The larva hibernates twice. It feeds in the living wood (branches, trunks) of the host plant. Frass often indicates the larval presence. Infected thin branches sometimes wilt and die. The full grown larva prepares an exit hole which sometimes remains closed by a thin layer of bark. Pupation takes place at the end of the gallery, head down. The pupa protrudes the exit hole before emerging. The moths come to light but males more frequently than females.
The adults fly from the end of May till the end of August but very occasionally also till late September.