Last modified: Nov. 14, 2024, 10:11 a.m.
An uncommon species in Belgium.
Native
The mine starts in the petiole, or bark or twig, and ends with an excision very close to the leaf base of the leaf. The oval case is portable and the larva descends in it to the ground where it's attached to detritus. Pupation in the case. The adults can be seen flying in numbers around the lower branches of the food plant and in the surrounding undergrowth.
The adults fly in one generation a year: from mid-April to early June.