A fairly common species in Belgium.

The larva lives on Alnus incana. The long mine is on the underside of the leaf, between veins, narrow and close to the midrib, often several mines in one leaf.  Pupation in a white cocoon. The pupa of the second generation hibernates.

The adults fly in two generations a year: onwards from mid April till May and again from late July towards August. They come to light.