Large-grooved Diving Beetle Colymbetes fuscus

Colymbetes fuscus

Body length 15-17 mm. A fairly large diving beetle. The elytra are light straw brown and on close inspection have a network of black, transverse grooves. The head and neck shield are brown.

Seen all year round near well vegetated lakes and ponds. Attracted to light. Widespread and fairly frequent in Britain.

Class Insecta (Insects)
Order Coleoptera (Beetles)
Family Dytiscidae (Diving Beetles)
Species Colymbetes fuscus (Linnaeus, 1758)

Species identification confirmed and recorded by an expert from iRecord.

Photos: Attracted to moth trap light, back garden, South Staffordshire. 7th August 2006. © Peter Hillman