Virtually identical to common rustic (Mesapamea secalis) in colour, markings, flight times, habitat and food-plants. It is therefore necessary to examine the genitalia for positive identification. See common rustic for more information.

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.