Description: A tumid, obliquely oval shell with broad umbos well behind the mid point. Surface glossy with regular concentric ribbing. Colour grey to cream tinged pink/orange from the animal inside. Widespread but declining. 3.5-4mm.

World Distribution: Distribution type: Eurasian Temperate (75).

Irish Distribution: Always an uncommon species preferring very clean water. Scattered in the east and centre but probably in decline due to eutrophication (enrichment) of many water-bodies.

Ecology:

• Confined to richer (calcareous, low trophic) drains and streams
• Also in small, clean lakes and ponds

Key Identification Features:

• A medium-sized tumid, obliquely oval, shell
• Umbos broad and sitting well behind the mid point
• Surface glossy with regular concentric ribbing
• Colour grey to cream tinged pink/orange from the animal inside

Red list status:

• Endangered (EN).

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

iNaturalist: Euglesa pulchella at iNaturalist World Species Observations database.

GBIF data for Euglesa pulchella | Classification: Bivalvia, Sphaeriida, Sphaeriidae, Euglesa

Thumbnails for genus Euglesa