British Wildlife Wiki

The Welshman's Button Caddisfly (Sericostoma personatum) is a species of caddisfly in the Sericostonatidae family.

This species is widespread in Britain, often in good numbers where it occurs, and it's larva can be found in rivers and lakes. The adults have plain brown wings, and flies by day and night.

Welshman's Button Caddisfly

Welshman's Button -