Last modified: Oct. 15, 2025, 1:56 p.m.
A rare species in Belgium.
Native
The full-grown larva lives in a brown case of 9–11.5 mm, the end is bivalved. 
The mouth angle 0–20°. 
Just behind the mouth, the case shows a conspicuous bend.
See also bladmineerders.be.
Oviposition generally on a vein.
 The larvae are fully developed in June–July.
 The adults come to light.
The adults fly in one generation a year during June and July.