Very small numbers found in suitable areas of broadleaved woodland from August to September. The larvae feed on a variety of plants including bilberry (Vaccinium myrtillus), bramble (Rubus fruiticosus agg.), willows (Salix spp.) and birches (Betula spp.).

References: 
Leverton, R. & Cubitt, M. (2024). The Larger Moths of Scotland.
Waring, P. & Townsend, M. (2018 third edition). Field Guide to the Moths of Great Britain and Ireland.