MolluscIreland - land and freshwater
  • Columella aspera Waldén 1966
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Columella aspera
© Dr Roy Anderson

Map hosted by the National Biodiversity Data Centre, Waterford
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Very small, cylindrical brown shell of 4-5 whorls. Shell sculpture is relatively coarse with radial growth lines. Aperture lacking teeth. Smaller and more coarsely sculptured than C. edentula. Widespread.

Key characteristics

  • A very small, cylindrical brown shell of 4-5 whorls
  • Shell sculpture comprising regular, close-set growth lines
  • Spire tapering slightly towards apex
  • Aperture without teeth
  • Lip thin, simple

Size

2-2.5 mm.

World Distribution

Confusion with allied species makes assessment of its range difficult. In Europe it appears to have a Suboceanic Temperate range (72). However, it has recently been found in highland forests in the Ethiopian zone (Tattersfield et al., 2001).

Irish Distribution

Widespread, but commonest in the west and north.

Ecology

  • Generally common in woodland on acid or neutral soils
  • Waterlogged peat is not favoured but peatland lagg woods and the drier margins of raised mires are commonly well populated
  • May also be found in calcareous flushes in peaty terrain
  • There are several records for coastal dune systems and it seems to be more tolerant of drier conditions than C. edentula

Red List status

  • Least concern (lc).

Wikipedia link

Wikipedia page for Columella aspera

 Anderson, R., (2016). Columella aspera Waldén 1966. [In] MolluscIreland.
http://www.habitas.org.uk/molluscireland/species.asp?ID=68 Accessed on 2017-12-18.