Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Panpulmonata
SuperOrdo: Eupulmonata
Ordo: Stylommatophora
SubOrdo: Helicina
InfraOrdo: Clausilioidei
Superfamilia: Clausilioidea
Familia: Clausiliidae
Subfamilia: Clausiliinae
Tribus: Clausiliini
Genus: Clausilia
SubGenus: Clausilia (Clausilia)
Species: C. bidentata
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.
Subspecies
Clausilia bidentata abietina Dupuy, 1849
Clausilia bidentata bidentata (Ström, 1765)
Clausilia bidentata crenulata Risso, 1826
Clausilia bidentata moniziana Lowe, 1852
Distribution
This species is present in much of western Europe,[1] including:
Czech Republic - in Bohemia only
Great Britain
Ireland
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.
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.
References
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.
Strøm, H. (1765). "Beskrivelse over Norske insecter, første stykke". Det Trondhiemske Selskabs Skrifter. 3: 376–439, Tab. VI.
Anderson, R. 2005, An Annotated List of the Non-Marine Mollusca of Britain and Ireland, Journal of Conchology, London, 38: 607-638
Kerney, M, 1999, Atlas of the Land and Freshwater Molluscs of Britain and Ireland, Harley Books, Colchester
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