Clausilia bidentata

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Clausilia bidentata
Clausiliidae - Clausilia bidentata crenulata-5.JPG
Clausilia bidentata var. crenulata
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Clausiliidae
Genus: Clausilia
Species:
C. bidentata
Binomial name
Clausilia bidentata
(Strøm, 1765)
Synonyms
  • Turbo BidentatusStrøm, 1765 [2]
  • Clausilia nigricansMaton & Rackett, 1807

Clausilia bidentata, the two-toothed door snail, is a species of door snails, terrestrial pulmonate gastropod mollusks in the genus Clausilia belonging to the family Clausiliidae, all of which have a clausilium.

Contents

Subspecies

Distribution

This species is present in much of western Europe, [1] including:

Habitat

This species is commonly found under bark of trees or in crevices of rocks. The snails are often encountered when they are most active, at night during wet weather, at which time they often climb up trees and feed on lichens.

Ecology

It selectively grazes on calcareous-rock lichens, particularly the crustose lichen species Verrucaria nigrescens . [3]

Description

The shell of this snail is a small and cylindrical snail, very high-spired and narrow. The shell length reaches 10–11 millimetres (0.39–0.43 in). The shell is dark brown with noticeable spiral ribs, slight longitudinal grooves, and a horny operculum.

Clausilia bidentata var. crenulata - Close-up Clausiliidae - Clausilia bidentata crenulata-6.JPG
Clausilia bidentata var. crenulata – Close-up
Lateral view of the shell of Clausilia bidentata crenulata. Clausiliidae - Clausilia bidentata crenulata.-2.JPG
Lateral view of the shell of Clausilia bidentata crenulata.
Clausilia bidentata var. crenulata. Clausiliidae - Clausilia bidentata crenulata..JPG
Clausilia bidentata var. crenulata.
Clausilia bidentata var. crenulata, close-up. Clausiliidae - Clausilia bidentata crenulata.-1.JPG
Clausilia bidentata var. crenulata, close-up.
Clausilia bidentata 01.JPG

References

  1. 1 2 Seddon, M.B. (2017). "Clausilia bidentata". IUCN Red List of Threatened Species . 2017: e.T171591A1328595. doi: 10.2305/IUCN.UK.2017-3.RLTS.T171591A1328595.en . Retrieved 19 November 2021.
  2. ↑ Strøm, H. (1765). "Beskrivelse over Norske insecter, første stykke". Det Trondhiemske Selskabs Skrifter. 3: 376–439, Tab. VI.
  3. ↑ Fröberg, Lars; Baur, Anette; Baur, Bruno (1993). "Differential herbivore damage to calcicolous lichens by snails". The Lichenologist. 25 (1): 83–95. doi:10.1006/lich.1993.1015.


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