Wingspan c. 11mm.
A rather scarce species, occurring in the calcareous downland areas and limestone hills of southern and southern central England.
The day-flying adult moths are well-marked and colourful, with purplish, orange brown and white markings, and are unlikely to be confused with any other species.
They are on the wing in May and June.
The larval foodplant is ploughman's-spikenard (Inula conyzae), forming a blotch mine on the leaves