Cybister confusus, is a species of predaceous diving beetle found in India, Bangladesh, Pakistan and Sri Lanka.

[1][2][3] It is a carnivorous fresh water beetle commonly found in ponds.

[4] 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 consists with eight blind hepatic caeca.