Wingspan 9-13 mm.
A very distinctive species, having two orange blotches on a chocolate brown forewing.
Flying in June and July, the moths can be found in the afternoons on the flowers of the foodplant, hogweed (Heraclium sphondylium).
It is distributed throughout Britain and Ireland, though it can be localised.
The larvae spin seeds of hogweed together and feed on the seeds inside the spinning.