Last modified: Feb. 18, 2020, 10:24 a.m.
A common species in Belgium, favouring damp and shady locations.
Egg allways on the underside of the leaf.
The initial gallery is narrow and highly contorted, final part strongly widened, sometimes forming a elongated blotch.
See also bladmineerders.be
Pupates in a blackish brown cocoon spun on or under the surface of the ground.
The adults fly in one generation a year during late June and July.