Length 2.3-2.8 mm. This species is easily separated from related species by its colouring. It is yellowish with a darker head and a dark spot beyond the middle of each elytron. The scutellum, head and two penultimate antennomeres are also dark. There can also be a variable amount of darkening around the start and end of the elytral suture.

In fens amd marshy areas on reeds and under reed litter or debris.

It flies in the evenings.

Widespread in southern and central England and in Wales. Fewer records from northern England, Scotland, Ireland.

Moderately common in Leicestershire and Rutland.