An abundant species found in damp woodland and marshy areas but also common on machair from August to September. It’s quite variable in its ground colour. The larvae feed on a range of sedges and grasses.

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.