Last modified: Nov. 2, 2024, 12:19 p.m.
A common species throughout Belgium.
Native
Wingspan 10–16 mm.
Eriocrania semipurpurella and Eriocrania sangii are very similar and are difficult to distinguish from each other, genitalization is necessary to achieve species ID.
The mine starts as a short gallery close to the leaf edge that is soon extended into a blotch mine that can cover a large part of the leaf. The black frass inside the gallery lies in long threads.
See also bladmineerders.be
Pupation takes place inside a tough silken cocoon.
The mine starts as a short gallery close to the leaf edge that is soon extended into a blotch mine that can cover a large part of the leaf. The black frass inside the gallery lies in long threads. The species hibernates in the pupal stage in a hard silk cocoon in the soil.
The adults can be observed resting on the trees or flying around the trees in the sunshine. Later they occasionally come to light.
The adults fly in March and April in one generation.