Length 11 to 15 mm. A rather plain brown caddis, but with two distinct small pale spots near the margin of the forewing..

Breeds in still and running water, but most common in streams.

Late July to October.

Larval case is built of sand grains. Small sticks are then attached to the case and this prevents Trout from swallowing it. The larvae feed on algae and small insects.

Widespread and fairly frequent in Britain.

Fairly frequent in Leicestershire and Rutland.