Wingspan c. 12mm.
This unassuming Coleophorid is present though locally, in southern and eastern England, with a scattered distribution extending to northern England and North Wales. It prefers waste ground and similar habitats.
Adults are on the wing in July and August, but the species is best looked for by searching for feeding holes on the foodplant, mugwort (Artemisia vulgaris). The larva forms a case very closely resembling a seedhead, and moves from seed to seed leaving diagnostic small holes in the side of each one.