An uncommon spring species with 31 records as of 2024, spread across the archipelago. The markings are variable and can be quite indistinct in some specimens, but the rounded forewing is a useful character. The fight period is from April to May in broadleaved woodland and scrub. The larvae feed on willow (Salix spp.), birches (Betula spp.) and alder (Alnus glutinosa).

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.