Zonitoides excavatus

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Zonitoides excavatus
TaylorMonographHyalina.jpg
Zonitoides excavatus figure 6
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
clade limacoid clade
Superfamily: Gastrodontoidea
Family: Gastrodontidae
Genus: Zonitoides
Subgenus: Zonitoides
Species: Z. excavatus
Binomial name
Zonitoides excavatus
(Alder, 1830])[1]
Synonyms

Helix excavata Alder, 1830

Zonitoides excavatus is a European species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Gastrodontidae.

Distribution[edit]

Distribution of Zonitoides excavatus include:

  • British Isles: Great Britain and Ireland. In Britain it restricted to a few regions, but frequent in the zones where it occurs (Cornwall, south of London, west Wales, southwest and northwest Ireland, central England, southwest Scotland).[2]
  • Endangered in Germany (2009).[2]
  • Denmark[2]
  • Belgium[2]
  • northern France.[2]

Description[edit]

Zonitoides excavatus is smaller than Zonitoides nitidus.[2] The umbilicus is extremely wide and perspectivically open (as is the case in Discus rotundatus).[2] The shell is weakly brown, slightly transparent, with radial streaks.[2] The animal is dark.[2]

The width of the shell is 5.3–6 mm, and the height of the shell is 2.8-3.4 mm.[2]

Ecology[edit]

Zonitoides excavatus lives in leaf litter and under dead wood in old natural forests, sometimes also in swamps (western Ireland and western Great Britain).[2] It lives only on non-calcareous soils.[2] It tolerates some degree of human disturbance and replanting, but usually not in forest plantations.[2]

References[edit]

This article incorporates public domain text from the reference.[2]

  1. ^ Alder J. (1830). "A catalogue of the land and fresh-water testaceous Mollusca found in the vicinity of Newcastle upon Tyne, with remarks". Transactions of the Natural History Society of Northumberland and Durham 1(1): 26-41. London.
  2. ^ a b c d e f g h i j k l m n "Species summary for Zonitoides excavatus". AnimalBase, last modified 28 January 2010, accessed 4 September 2010.

External links[edit]