([Denis & Schiffermüller], 1775)
Wingspan c.15-20 mm.
A reasonably common and widespread species in Britain extending into southern Scotland and in Ireland, and inhabiting wet heaths and moorland.
The adults fly in May and June, occasionally having a second generation in the south.
The larval foodplants are heath (Erica) and birch (Betula), the larvae feeding within spun leaves.