Cyrnus trimaculatus

Length 6 to 9 mm. The wings appear dark brown mottled with pale yellow, but very variable.

At the edge of still and slow flowing water. It is also attracted to light.

May to September.

Mostly carnivorous. The development of the larvae takes place in water. They build nets with funnel-shaped opening, which are usually attached to aquatic plants.

Widespread and fairly frequent throughout Britain.

Fairly frequent in Leicestershire and Rutland.