Widely distributed in Scotland and appears to be common in South Uist, also with records from Lewis. The young caterpillars feed on the catkins of willow (Salix spp.), moving to the leaves when more mature, feeding at night and hiding in spun leaves during the day.

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.