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Clausiliidae · skląsteniniai
- door snails
- Schließmundschnecken
- skląsteniniai
- vārpstiņgliemežu dzimta
- świdrzykowate, świdrzyki
en.wikipedia.org/wiki/Clausiliidae
Clausiliidae, common name door snails, are a taxonomic family of small, very elongate, air-breathing land snails, terrestrial pulmonate gastropod mollusks.
All the species of Clausiliidae have an anatomical structure known as a clausilium, which enables the snail to close off the aperture of the shell with a sliding "door". Almost all the species of snails in the family of door snails are left-handed, which is an uncommon feature in gastropod shells in general.
These snails have shells which are extremely high-spired, with numerous whorls. The shells tend to be club-shaped, tapering at both ends to a rounded nub. The aperture usually has visible folds.
Kiautas laibas, verpstės pavidalo su 9-14 apsisukimų. Turi dangtelį vadinamą klausilija (lot. clausilium), kuriuo gali užsidaryti angą. Rūšių atskyrimui svarbūs požymiai yra angoje išsidėsčiusios raukšlės ir plokštelės, kurios kiekvienos rūšies yra skirtingos ir pastovios.‥
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