Wingspan c. 9mm.
A rather attractive little species, sporting silvery metallic fasciae against a dark fuscous forewing, the central fascia being a (sometimes broken) elongated spot.
It has a fairly wide though scattered distribution over much of the British Isles, although it can be scarce outside of the southern half of England.
Single-brooded, adult moths fly in July in their favoured habitat of open woodland. The larval foodplants are various wood-rush (Luzula spp.), on which the larvae form a blister mine that often causes the leaf blade to pucker.