A scarce species found on Barra and the southern end of South Uist. It prefers open areas such as machair or dunes, flying in July and August. The larval food-plants are red bartsia (Odontites vernus) and eyebrights (Euphrasia spp.).

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.