Last modified: Jan. 21, 2021, 12:10 p.m.
A fairly common species in Belgium, more frequently observed in the northern provinces.
The adults fly in June and July. They are active at night and come to light.
The larva lives in a scanty white web along the midrib on the upperside of a leaf of Ulmus. It prefers bushes. Pupation takes place in the earth or in rotten wood. The pupa hibernates.