Last modified: April 22, 2020, 3:09 p.m.
An uncommon species in Belgium, mostly observed in the northern part.
The ochreous fore wings have distinct white lines. The costa line is extending till 5/8 of the wing.
The antennae are on the upper side alternating ringed till 2/3 or even 3/4.
Wing span is 13,5–17 mm.
The yellow-brown to light grey silken case has darker length lines. The case is large, up to 17 mm and very slender. The end is three-valved.
The mouth angle about 50°.
See also bladmineerders.be.
The eggs are deposited at the underside of a leaf.
The larvae are feeding at the underside of the leaves.
Full-grown cases in September – October; after hibernation the larva usually does not feed anymore and pupates nearby at ground level.
The adults fly in one generation a year; during June and July. They come to light.
This species can be found nearly everywhere.