MolluscIreland - land and freshwater
  • Myosotella myosotis (Draparnaud 1801) Estuarine mouse-eared snail
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Myosotella myosotis
© Dr Roy Anderson
Myosotella myosotis
© Dr Roy Anderson
Myosotella myosotis
© Dr Roy Anderson

Map hosted by the National Biodiversity Data Centre, Waterford
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Very similar to Myosotella denticulata but larger and broader and consistently coloured reddish-brown to mid-brown. The outer lip in mature specimens has no more than a single denticle. Habitat is different from that of M. denticulata, living only in partially saline, estuarine conditions.

Key characteristics

  • A slightly shiny fairly robust red-brown shell with body whorl greater than half total height
  • Aperture ear-shaped with two lamellae (one large) on the columella and one denticle or none on the outer lip
  • Whorls flattened and sutures shallow

Size

6.5-8 mm.

World Distribution

Distributed along coasts from Denmark and the British Isles to the Mediterranean and Black Seas. Distribution type: Mediterranean-Atlantic (91).

Irish Distribution

Locally common around the Irish coast in estuarine or brackish habitats.

Ecology

  • Confined to sheltered rocky or muddy coastlines at or above HWM in estuaries or sheltered inlets of the sea
  • Shelters under stones and at the roots of saltmarsh vegetation

Taxonomy

See Myosotella denticulata.

Red List status

  • Least concern (lc).

Wikipedia link

Wikipedia page for Myosotella myosotis

 Anderson, R., (2016). Myosotella myosotis (Draparnaud 1801). [In] MolluscIreland.
http://www.habitas.org.uk/molluscireland/species.asp?ID=121 Accessed on 2017-12-17.