MolluscIreland - land and freshwater
  • Pisidium subtruncatum Malm 1855 Short-ended pea mussel

Map hosted by the National Biodiversity Data Centre, Waterford
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A moderately tumid, strongly oblique, oval shell with prominent umbos well behind the middle. Surface silky/glossy with fine, irregular ribbing. Colour whitish to grayish. Widespread and common.

Key characteristics

  • Characterised by the strongly oblique shell shape
  • Umbos prominent and well behind the middle
  • Surface glossy/silky with fine irregular ribbing
  • Colour whitish to grayish



World Distribution

Distribution type: Circumpolar Wide-temperate (66).

GBIF distribution map [open in new tab]

Irish Distribution

One of the commonest pea shells in Irish habitats and found throughout, though rarer in the west and north and at higher elevations.


  • Nearly always found in lowland areas and in larger, richer habitats
  • Less common in marshes, ditches and smaller habitats generally

Red List status

  • Least concern (lc).

Wikipedia link

Wikipedia page for Pisidium subtruncatum

 Anderson, R., (2016). Pisidium subtruncatum Malm 1855. [In] MolluscIreland. Accessed on 2024-03-02.