''Cybister confusus'', is a species of

predaceous diving beetle The Dytiscidae – based on the Greek ''dytikos'' (δυτικός), "able to dive" – are the predaceous diving beetles, a Family (biology), family of water beetles. They occur in virtually any freshwater habitat around the world, but a ...

found in India, Bangladesh, Pakistan and Sri Lanka.

Description

It is a carnivorous fresh water beetle commonly found in ponds. Alimentary canal of the adult is highly studied. It is a highly coiled tube with a length of 4 inches and divided into three regions: foregut, midgut and hindgut. Midgut is about one inch long with uniform diameter. Midgut consists with eight blind hepatic caeca.

References

Dytiscidae Insects of Sri Lanka Insects described in 1882 {{Dytiscidae-stub