Last modified: Feb. 18, 2020, 9:03 a.m.
A fairly common species in Belgium.
The larva makes a leafmine usually starting close to the midrib or near the leaf edge on the upper or underside side of small-leaved willows. Pupates in a dark reddish brown cocoon covered with fluffy silk.
The adults fly in two generations a year; during May and June and again in September.
The larva makes a leafmine in small-leaved willows like Salix alba, S. babylonica, S. fragilis, S. pentandra and S. viminalis.