Mollusca : Gastropoda : Stylommatophora : ClausiliidaeSnails and slugs

Cochlodina laminata (Montagu, 1803)

Plaited Door Snail

Cochlodina laminata

Description: Like other members of the Clausiliidae the shell is sinistral, fusiform or club-shaped with a long narrow spire, but only gradual tapering on the upper whorls. Shells of C. laminata are large, broadly fusiform, of 11-12 whorls and with a rather blunt apex . Aperture is pear shaped with strongly developed parietal and columellar lamellae. Surface glossy to weakly glossy with faint irregular growth lines, yellow-brown to mid brown in colour and translucent. Very local in old woods. 15-17 mm.

World Distribution: Mainly central European and becoming much more localised towards Atlantic coasts. Distribution type: European Temperate (73).

Irish Distribution: Very localised and uncommon except for a large part of south Fermanagh and adjacent areas of Co. Cavan around Cuilcagh Mountain. Other localities include Lough Gill, Co. Sligo, Killinure, L. Ree, Co. Westmeath and Enniskerry, Co. Wicklow.

Ecology:

  • An arboreal species associated with areas of ancient woodland
  • Most frequent in limestone areas
  • Usually seen ascending the trunks of smooth-boled trees such as beech or ash after rain

Key Identification Features:

  • Shell large, 15-17 mm tall
  • Narrowly fusiform (barrel-shaped) with gradually tapering upper whorls
  • Surface smooth weakly to strongly glossy with faint growth (radial) lines
  • Shell translucent and yellow-brown to mid-brown in colour
  • Aperture pear shaped with strong parietal and columellar lamellae

Red list status:

  • Vulnerable (VU).

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

iNaturalist: Cochlodina laminata at iNaturalist World Species Observations database.

GBIF data for Cochlodina laminata | Classification: Gastropoda, Stylommatophora, Clausiliidae, Cochlodina

Thumbnails for genus Cochlodina

 Anderson, R., 2024. Cochlodina laminata. (Montagu, 1803). [In] MolluscIreland.
https://www2.habitas.org.uk/molluscireland/species.php?item=66. Accessed on 2024-12-26.