MolluscIreland - land and freshwater
  • Cochlodina (Cochlodina) laminata (Montagu 1803) Plaited Door Snail
Click on the image to enlarge it in a new window
Cochlodina (Cochlodina) laminata
© Dr Roy Anderson

Map hosted by the National Biodiversity Data Centre, Waterford
To view the species profile on Biodiversity Maps and access the live map, please click on the map.

 

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.

Key characteristics

  • 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

Size

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

Red List status

  • Vulnerable (VU).

Wikipedia link

Wikipedia page for Cochlodina laminata

 Anderson, R., (2016). Cochlodina (Cochlodina) laminata (Montagu 1803). [In] MolluscIreland.
http://www.habitas.org.uk/molluscireland/species.asp?ID=66 Accessed on 2017-10-18.