Agabus didymusAgabus didymus is a species of beetles belonging to the family Dytiscidae.DescriptionAgabus didymus can reach a length of. The head is black. The pronotum is dark with reddish lateral margins and base. Elytrae have three rows of punctures and characteristic lateral and subapical translucent cream N-shaped marks.DistributionThis species is present in most of Europe, in the Near East and in North Africa.