may remain active throughout the winter. Habitat These beetles typically occur in small water bodies with little or no vegetation. They may be found in garden ponds, temporary pools, flooded tyre ruts, water butts and brackish water ponds. Diet Adults and larvae are both predators whose preferred prey is mosquito larvae. Additionally, larvae can be cannibalistic. Midge larvae and water fleas have also been described as prey of R. suturalis. Gallery References Dytiscidae Beetles described in 1825 Taxa named by William Sharp Macleay