A common species in Belgium.

The larva makes a leafmine starting close to the midrib of a leaf of Fagus sylvatica. The initial gallery leading away from the midrib and progresses in a series of "S" turns between the veins. Pupation in a pale yellowish white cocoon.

The adults fly in two generations: from late April  to early June and again from July to August.

ID mine: a small mine, the sinuous gallery usually starts from the midrib and ends direction of leaf edge between the veins, rarely crossing. The frass is dispersed in the gallery, never in arches.