Last modified: Jan. 28, 2020, 1:01 p.m.
A very rare species in Belgium, mainly occurring on dry calcareous or sandy soils.
The young larva feeds on the developing seeds and hibernates in its first case which is made of the tip of a petal. After the winter the larva makes a composite case resembling a willow catkin.
The larvae live mostly at the tip of a leaf or the fleck mines are made at the margin of the leaves, that thereby look peculiarly damaged.
Larvae are full grown in mid May – early June.
Before pupating the larvae may wander around a lot, so they can be found at many different plants being not there feeding plant.
See also bladmineerders.be.
The adults fly in one generation a year; onwards from late May till July. They come to light.
The larva lives mainly on Anchusa officinalis and Echium vulgare but also on a lot of other plants.
Calcareous and sandy arias.