Length 4.5 mm. Polymerus species are medium-sized bugs which are predominantly black or black and yellow in colour. The upper surface is covered in scale-like golden or silver hairs and the tibiae bear strong black spines.

This species can be identified with care but there are similar species that it could be confused with.

On bedstraws in a variety of habitats

Adult: June-September

Fairly common across much of Britain

Fairly frequent in Leicestershire and Rutland.