Last modified: May 14, 2020, 5:38 p.m.
A rather common species in the northern part of Belgium, a rather rare species in the south.
The young larva mines the underside of a leaf, visible from above as a brown patch.
See also bladmineerders.be
Later instars of the caterpillar spin a slight web on the underside of the leaves. Pupation in autumn in the feeding place or in a cocoon in the earth close to the foodplant.
The species hibernates in the adult stage. The moths hide during the day but become active in the evening. The occasionally come to light.
One generation a year: from September till July of the following year.
Ruderal places, open grassland, waste ground.