Clausilia dubia

Clausilia dubia is a species of small, very elongate, left-handed air-breathing land snail, a sinistral terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.^[2]

Clausilia dubia
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Clausiliidae
Genus:	Clausilia
Species:	C. dubia
Binomial name
Clausilia dubia Draparnaud, 1805
Synonyms
Clausilia (Andraea) dubia Draparnaud, 1805· accepted, alternate representation Clausilia (Clausilia) dubia Draparnaud, 1805

Subspecies

• Clausilia dubia alpicola Clessin, 1878
• Clausilia dubia bucculenta Klemm, 1960
• Clausilia dubia carpathica Brancsik, 1888
• Clausilia dubia dubia Draparnaud, 1805
• Clausilia dubia dydima F. J. Schmidt, 1847
• Clausilia dubia floningiana Westerlund, 1890
• Clausilia dubia geretica Bourguignat, 1877
• Clausilia dubia gracilior Clessin, 1887
• Clausilia dubia gratiosa Sajó, 1968
• Clausilia dubia grimmeri L. Pfeiffer, 1848
• Clausilia dubia huettneri Klemm, 1960
• Clausilia dubia ingenua Hudec & Brabenec, 1963
• Clausilia dubia kaeufeli Klemm, 1960
• Clausilia dubia otvinensis H. von Gallenstein, 1895
• Clausilia dubia runensis Tschapeck, 1883
• Clausilia dubia schlechtii A. Schmidt, 1856
• Clausilia dubia speciosa A. Schmidt, 1856
• Clausilia dubia suttoni Westerlund, 1881
• Clausilia dubia tettelbachiana Rossmässler, 1838
• Clausilia dubia vindobonensis A. Schmidt, 1856

Distribution

The species is widespread in Europe, living in countries and islands including (among others):^[1]

• Austria
• Czech Republic
• Great Britain, the north of England
• Slovakia
• Ukraine^[3]

Description

All the species of snails in the family of door snails are left-handed, which is an uncommon feature in gastropods in general. These snails have shells which are extremely high-spired, with numerous whorls.

Clausilia dubia is a relatively large species for this family, reaching 16 mm in height.

The weight of the adult live snail is about 123 mg.^[4]