Last modified: May 8, 2019, 6:03 p.m.
A very rare and local species in Belgium.
The forewings are yellow brown with a paler costal line.
The antennae are alternately ringed white and dark brown-black till nearly the tip.
Wingspan is 11–13 mm.
The caterpillar makes a lobe case which is slender and hairy, and 8–10 mm long. The colour is dark brown.
The mouth angle is 80–90°.
See also bladmineerders.be.
The caterpillars make clearly visible mines on the leaves of the foodplant.
Larvae from October till May. They are fully grown in May.
The adults are on the wing from the end of May till the whole of July.