Last modified: Sept. 5, 2023, 8:01 p.m.
A very rare and local species in Belgium.
The forewings are mostly ochreous. The lighter stripe on the costa takes ½ of the wing.
The antennae are ringed white–brown till nearly the wing tip.
Wingspan is 11–13,5 mm.
The larvae live in a tri-valved tubular silken case of 8 mm long, with a mouth angle of 25°–30°. The case is pale brown. It has also a double dorsal keel.
See also bladmineerders.be.
The white blotches on the leaves are easily spotted.
The larvae are full-grown around May.
Pupation takes place at ground level on the stem of the host plant.
The adults fly in one generation a year: from late May towards July.