Cochlostoma septemspirale
Two live individuals of Cochlostoma septemspirale in France
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
informal group Architaenioglossa
Superfamily:
Cyclophoroidea
Family:
Cochlostomatidae
Genus:
Cochlostoma
Subgenus:
Cochlostoma
Species:
C. septemspirale
Binomial name
Cochlostoma septemspirale
Synonyms[3]
  • Helix Septem Spiralis Razoumowsky, 1789
  • Cyclostoma maculatum Draparnaud, 1805

Cochlostoma septemspirale is a species of a land snail with an operculum, a terrestrial gastropod mollusk in the family Cochlostomatidae.

Distribution

The distribution of Cochlostoma septemspirale is southern Europe from the Pyrenees to south Germany and the central Balkans.[4]

Cochlostoma septemspirale is the most widely distributed Cochlostoma species.[4]

Drawings of a shell of Cochlostoma septemspirale

Description

The shell is light greyish brown with 3 rows of reddish brown spots.[4] It has 6-8 regular ribs/mm and 7-10 convex whorls.[4] The aperture is inside whitish.[4] There is no significant sexual dimorphism on the shell.[4]

The width of the shell is 3.2-4.4 mm.[4] The height of the shell is 6.7-10.2 mm.[4]

The animal is medium-sized (5-6.5 mm long), greyish with weak brownish hue.[4]

Ecology

Cochlostoma septemspirale lives in forest habitats, rocks, rock rubble, walls and grassy slopes, up to 2100 m.[4]

It feeds on disintegrating plant substrate, sometimes also on the algae film growing on limestone.[4]

The animal is slow, not very active, and very shy. However the animal will emerge when put onto a cold object.[4] It is active only in wet weather, and the operculum is closed when the soil is dry.[4] This snail climbs trees up to 2 m during very wet weather conditions.[4] It hibernates between stones, under leaves and grasses; activity seems to cease when temperatures go below 6-7 °C.[4]

Eggs (diameter 1.0-1.1 mm, occasionally down to 0.6 mm) are laid from April to October, mainly during May to June, about 1 cm below the surface.[4] The eggs are covered by the female with faeces and mucus. They are laid in clutches of up to 10 eggs.[4] Juveniles hatch after 45–60 days, and the full adult shell size is reached after roughly 1 year.[4]

References

This article incorporates public domain text from the reference.[4]

  1. ↑ Fehér, Z. (2020). "Cochlostoma septemspirale". IUCN Red List of Threatened Species. 2020: e.T170576A176212064. doi:10.2305/IUCN.UK.2020-3.RLTS.T170576A176212064.en. Retrieved 12 November 2021.
  2. ↑ Razoumowsky G. de (1789). Histoire naturelle du Jorat et de ses environs; et celle des trois lacs de Neufchatel, Morat et Bienne; précédées d'un essai sur le climat, les productions, le commerce, les animaux de la partie du Pays de Vaud ou de la Suisse Romande, qui entre dans le plan de cet ouvrage. Tome premier. pp. [1-2], I-XVI [= 1-16], 1-322, Pl. 1-3. Lausanne. (Mourer).
  3. ↑ "Synonyms of Helix septemspiralis". AnimalBase, accessed 24 August 2010.
  4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 "Species summary for Cochlostoma septemspirale". AnimalBase, Last modified 5 March 2009, accessed 24 August 2010.
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