Alinda biplicata
Template:Short description Template:Speciesbox
Alinda biplicata, also known as Balea biplicata, common name the two-lipped door snail or Thames door snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.[1] [2][3]
Distribution
This species is known to occur in several European countries and islands, including:
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This species is rare in Great Britain. In England, it is found mainly in the London area, almost exclusively along the River Thames, and is particularly preserved at Isleworth Ait.[4] There is also a colony at Purfleet in Essex.[5]
1 - Lamella superior
2 - Lamella inferior
3 - Lamella subcolumellaris
4 - Lunella
5 - Clausilium
6 - Plica medialis
7 - Plica principalis
8 - Lamella spiralis
Description
Like all species in this family, this snail has a clausilium. This spoon-shaped "door" is supported by, and slides in, a series of internal shell folds, see the image below.
The weight of the adult live snail is 149±6 mg.[6]
References
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- ↑ Template:WRMS species
- ↑ Kantor Yu I., Vinarski M. V., Schileyko A. A. & Sysoev A. V. (published online on March 2, 2010). "Catalogue of the continental mollusks of Russia and adjacent territories". http://www.ruthenica.com/documents/Continental_Russian_molluscs_ver2-3-1.pdf Version 2.3.1.
- ↑ fauna-eu.org "Alinda (Alinda) biplicata (Montagu 1803)". Fauna Europaea, last update 27 January 2011, accessed 17 April 2011.
- ↑ Rare snail habitat is protected. BBC News, last updated: Thursday, 22 February 2007, 11:16 GMT.
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External links
- Balea biplicata at AnimalBase
- Balea biplicata at BioLib with images and synonyms
- images
- Photo of a mating pair: [1]
- Sulikowska-Drozd A., Maltz T. K. & Kappes H. (2013). "Brooding in a temperate zone land snail: seasonal and regional patterns". Contributions to Zoology 82(2): http://www.ctoz.nl/vol82/nr02/a02