Widespread across the archipelago but more numerous in the south. On the wing from May to August where poplars (Populus spp.) and willows (Salix spp.) grow.

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.