8-9mm. One of several very similar Corixidae species of water boatmen. Detailed examination is necessary for identification of species.

• 8-9mm
• 8-10 pale stripes on the pronotum
• tarsi pale (but hairs may be dark)
• xiphus broad and bent down towards the dorsum
• mid leg claws at least as long, or longer, than the tarsi
• clavus (front of wing cover) usually striped
• anterior margins of pronotum obtuse

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Found in ponds or still water, usually among emergent vegetation. It is less common in moving water.

All year round, though most frequently encountered in summer months. It may be attracted to light.

Males stridulate very loudly.

Widespread and fairly frequent in Britain.

Status in Leicestershire and Rutland not known.