7.5-8.5mm Platambus maculatus is a predaceous diving beetle usually with characteristic markings, though darker specimens are less obvious. The pale elytral margins are consistent.

• 8mm
• pale elytral margins

Found in permanent streams, rivers, canals and sometimes in lakes, often amongst submerged parts of over-hanging vegetation.

April to November.

Widespread and quite frequent in Britain.

Fairly frequent in Leicestershire and Rutland.