water beetle
A water beetle is a generalized name for any beetle that is adapted to living in water at any point in its life cycle. Most water beetles can only live in fresh water, with a few marine species that live in the intertidal zone or littoral zone. T ...
s from Madagascar in the family
Torridincolidae
The Torridincolidae are a small family of beetles in the suborder Myxophaga. It contains these genera:Torridincolidae Species List at Joel Hallan’s Biology Catalog. Texas A&M University. Retrieved on 11 May 2012.