Last modified: Feb. 26, 2021, 1:49 p.m.
A common species in Belgium, mainly in the northern half.
The young larva mines the leaf of Quercus in a short, contorted gallery.
See also bladmineerders.be
Later, after the mining, it feeds externally on the underside of the leaf.
Pupation in a white, ribbed cocoon on a leaf or the tree trunk.
The adults are active in the evening.
The adults fly in two generations a year: in July-August, and from November hibernating till April.
The young larva mines the leaf of Quercus.