Wingspan c. 10-13 mm.
This species is to be found in coastal and lowland areas in England and Wales, with a more coastal distribution in Scotland, where it is scarcer. It also occurrs uncommonly in Ireland.
The adults fly in afternoon sunshine, when they rest on flowers of the foodplant, and again from dusk onwards.
There is a single generation with moths on the wing in July and August.
The larvae feed in a slight spinning amongst seeds of umbellifers, particularly wild carrot (Daucus carota).