Agabus bipustulatus


9.5-11.5mm. A very common black diving beetle with pale brown antennae and brown front legs. It has a smoothly rounded outline with elongate microsculpture within which is a mesh pattern.

Identification difficulty
ID guidance
  • 9.5-11.5mm
  • all black with pale brown antennae and brown front legs
  • males are shiny and females are dull
  • smooth, rounded outline
  • elongate micro-sculpture with a mesh pattern within

Favours still or stagnant water or sluggish bays in running water. Sometimes drawn to light or to the metallic paint of cars by polarised light (as in the image below).

When to see it

The adult can be found all year round.

Life History

This is a carnivorous beetle which hunts small creatures in and on the water.

UK Status

Widespread and the commonest water beetle in Britain.

VC55 Status

Common in Leicestershire and Rutland.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map