Wingspan 14-18 mm.
A distinctive species with bright orange-rufous forewings and several greyish metallic markings towards the rear of the wing, this moth is locally common in the south of Britain, becoming scarcer further north.
The adults fly at sunrise, and later from dusk onwards. They are on the wing in June and July, sometimes with a second brood in late August/September.
It frequents open woodland and similar areas, and feeds on St. John's-wort (Hypericum).