Last modified: April 19, 2020, 4:44 p.m.
A very rare and local species in the southern part of Belgium.
The forewings are light brown with a white line along the whole costa.
Wingspan is 19–21 mm.
The antennae are alternately ringed blackish brown and white till the tip.
The caterpillar lives in a light-brown silken case of 10 mm. The mouth angle is 20°–30°.
See also bladmineerders.be.
The caterpillars live from the beginning of the summertime till autumn. The larva attaches its case to a pod and feeds upon the seeds, therefore it is rather easy to find, also the feeding holes are easy to see.
The adults fly in June and July.
Only where the food plant is to be found.