Late June to early August. Common in Wales and England as far north as Cumbria and North Yorkshire but very rare in Scotland. A very pretty moth with a flint-like appearance.

The wings are a combination of smooth grey and white with orange-brown arches. They are active from dusk are frequently attracted to light.

The larvae which are a reddish-brown with two or four cream coloured spots, can be seen from July to mid-October.