Last modified: March 4, 2022, 8:34 a.m.
A not so common species in Belgium.
Native
The adult flies from late May till the end of June; in favourable years, there is a second generation in August. The adults fly at sunrise and in sunshine in the afternoon and evening. They come to light.
The larva feeds between two leaves of Fagus spun together. It pupates in the larval feeding places and hibernates as a pupa.