Hippeutis complanatus, or the flat ram's-horn snail, is a species of minute air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk or micromollusk in the family Planorbidae, the ram's horn snails. Hippeutis complanatus is the type species of the genus Hippeutis.

Distribution

The species is found in the Palearctic zone, including Europe.

Shell description

This minute shell is almost perfectly planispiral and shaped like a lens. The whorls overlap one another. The shell color varies from offwhite to a brownish yellow.

Ecology

This snail lives in ponds and ditches, and prefers calcium-rich waters.