Scirtidae

Scirtidae is a family of beetles (Coleoptera). These beetles are commonly referred to as marsh beetles, as the larvae are typically associated with stagnant water, but can be found in flowing water. Adults prefer decomposing plant material near the water`s edge. More than an estimated 600 species are known worldwide, distributed among 30 genera. ....
Found on http://en.wikipedia.org/wiki/Scirtidae

Scirtidae

Scirtidae or Helodidae, is a family of small beetles of the order Coleoptera. The larvae develop in water and generally take to the land for the pupation.
Found on http://www.probertencyclopaedia.com/browse/BS.HTM
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