Last modified: April 28, 2022, 7:51 p.m.
A very local and rare species in Belgium. Is sometimes easily confused with Lampronia fuscatella.
Native
The adults fly from April till the end of May.
The larva lives on Fagus sylvatica, sometimes on Quercus or Tilia.
The young larva makes a circular blotch mine in the leaves of Fagus sylvatica, sometimes on Quercus or Tilia. Then it falls to the ground in a case cut from the blotch. This case is subsequently replaced by bigger ones as the larva grows. The caterpillar then eats dead leaves. It hibernates fully-fed in that case. Pupation in the case amongst leaf-litter.
The moths are active during the day.