Last modified: May 7, 2021, 10:53 a.m.
A rare species throughout Belgium, more distributed in the northern part of the country.
Full grown larvae live in a slender greyish white three-valved tubular silken case of 8 mm.
The mouth angle is about 45°.
See also bladmineerders.be.
The larva, while feeding, creates little white fleck mines.
The eggs are laid on the upper side of the food plant.
Full grown cases in May. Often several cases together on a small number of plants.
Pupation in the case attached to a stem of the food plant, vegetation or tree trunks.
It has not yet been recorded at light.
The adults fly in one generation a year: from late May till the end of July.