A fairly common species in Belgium.

The monophagous larva makes a leafmine, often in an angle of veins in a leaf of Betula. The initial gallery is slender and usually contorted, killing the uneaten tissues which turns brown. (this may be absent in exceptional cases where the egg is laid well away from veins) Later the mine follows a tortuous course, except when following a vein. The green frass (in fresh mines) is laid in arches and extends almost from edge to edge.

The adults fly in two generations; during May and June and again in August.