Last modified: March 26, 2021, 11:34 a.m.
A rare species in Belgium, with most observations from the Kempen.
The mines of this species are very hard to find on the host plants, because they are very small.
The larvae are sitting mostly on top of the host plants and are fully grown in May. Pupation takes place in the case.
The adults become active from dusk onwards and are easily disturbed by day.
The adults fly in one generation a year: from late May till the beginning of August.