Lunar Marbled Brown Drymonia ruficornis
The Lunar Marbled Brown, as its name suggests, is mainly brown under normal light but looks somewhat grey under artificial light here.
Its relative, the Marbled Brown, doesn't have the small crescent mark on the forewings that give the Lunar in the name.
Its relative, the Marbled Brown, doesn't have the small crescent mark on the forewings that give the Lunar in the name.
The Lunar MB also flies a little earlier (April-May) than the Marbled Brown (May-June).