Last modified: June 15, 2023, 9:14 a.m.
A very rare and local and seldom seen species in Belgium.
The forewings are silvery white and darkened at the tip of the wing. The veins are ochreous.
Wingspan is 11–14 mm.
The antennae are ringed alternately brown white till the tip.
There is a black pistol case.
See also bladmineerders.be.
At first there is a fleck-mine.
The caterpillar makes a black pistol case. The case is covered with grey plant hairs, but to a variable degree.
The case is to compare with Coleophora albidella also on the same food plant. The case of C. zelleriella is not paunchy.
The mouth angle is 75°–90°. Caterpillars are fully grown in June.
The adults are on the wing from the end of June till the beginning of August.
It has always been thought that this species lived monophagously on Salicaceae like: Salix aurita, S. caprea and S. cinerea, but the latest insights according to Baldizzone, the food plant should be Quercus.