Description: Shell a flattened, compressed coil with angulate periphery i.e. lens-shaped. Surface smooth, glossy. Body whorl deep with large aperture strongly angled in the middle and constricted by the convexity of the previous whorl. 3-5 mm.

World Distribution: Found across central and northern Europe to western Siberia. Distribution type: Eurosiberian Wide-temperate (64).

Irish Distribution: Fairly common across the central plain but rare towards the west and north.

Ecology:

• Most records are for clear, weedy habitats in waters of moderate hardness
• There are relatively few recent records and it may be in decline in some areas e.g. north-eastern counties

Key Identification Features:

• A glossy, flattened, lens-shaped shell
• Periphery angled and body whorl angled in the middle
• Lower and upper surfaces equally convex
• Umbilicus wide and shallow

Red list status:

• Least concern (lc).

Distribution Map from NBN: Hippeutis complanatus at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Hippeutis complanatus at iNaturalist World Species Observations database.

Thumbnails for genus Hippeutis