A rare and local species in Belgium.

The young larva mines the leaf of Betula, Corylus avellana and Castanea sativa. Initialy the mine is a narrow gallery, often contorted and later following a vein, the final chamber is often turned away at right angles, the frass fills the gallery. Later the larva eats out windows from either side, leaving the veinlets. Pupates in a greyish ochreous cocoon spun amongst debris.   

The adults fly in one generation a year; during May and early June. They come to light.