Last modified: Jan. 1, 2024, noon
A not so common species in Belgium.
Native
Wingspan 10–12 mm. This species is the larger and darker of the two sometimes appearing sooty and is less clearly marked than Strophedra nitidana.
The larva feeds between two leaves spun together causing window feeding, much frass accumulates between the leaves. It pupates in the larval feeding places in a frass-covered cocoon and hibernates as a pupa.
The adults fly at sunrise and in sunshine in the afternoon and evening and later come to light.
The adults fly from late April towards early September.
The larva lives mainly on Fagus sylvatica. Also reported from Carpinus betulus, Betula and Castanea sativa, the latter one is questionable.
It inhabits beech woods and areas where the host plant is present.