- Shelled slug
name = Shelled Slug
image_width = 230px
Shelled Slug, "Testacella haliotidea"
status = NE
genus = "
species = "T. haliotidea"
binomial = "Testacella haliotidea"
The shelled slug,"Testacella haliotidea", is a rarely seen, air-breathing,
carnivorousland slug, a terrestrial gastropod molluskin the family Testacellidae, the shelled slugs.
This slug, like others in the family, has a small shell which is situated towards the rear of the animal. The species is called "haliotidea" because the shell of this species resembles in shape a miniature version of the shell of the marine species in the family
Haliotidae, the abalones.
This species is common along the western
Mediterranean, along the European Atlanticcoast and throughout Great Britainapart from northern Scotland. This slug occurs in Europebut its distribution is under-recorded there.
It also occurs as an introduced species in southern
Australia, New Zealandand North America(where it is called the earshell slug). The distribution data for the United States, ( Oregon, Wisconsin) and Canada( British Columbia, Nova Scotia) are incomplete.
This species is seen mostly in the spring, living in cultivated habitats or on disturbed ground. The slug lives mostly underground, but may sometimes be found under stones or in leaf litter.
The diet of these slugs consists mainly of
earthworms, which are usually attacked and eaten underground. However, in very wet conditions, when earthworms are found on the surface, the slugs may attack them there. The grip of the needlelike teeth of the radulaof the slug is so strong that when the earthworm prey retreats to its burrow, the slug is also drawn below the surface, where it continues to eat the worm.
* Not listed in
IUCN red list- not evaluated (NE) [2006 IUCN Red List of Threatened Species. . Cited 3 March 2007.]
* [http://www.the-piedpiper.co.uk/th11a(1).htm Casual Intruders] , from which the initial information for this article was taken.
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