Omphiscola glabra
| Omphiscola glabra | |
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| A live individual of Omphiscola glabra on a paper grid, scale bar 1 cm | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Hygrophila |
| Superfamily: | Lymnaeoidea |
| Family: | Lymnaeidae |
| Subfamily: | Lymnaeinae |
| Genus: | Omphiscola |
| Species: | O. glabra |
| Binomial name | |
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Omphiscola glabra (Müller, 1774) |
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| Synonyms | |
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Omphiscola glabra is a species of small to medium-size, air-breathing, freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.
Omphiscola glabra is the type species of the genus Omphiscola.
This European snail can be found from southern Scandinavia (61° N) to southern Spain.
The distribution of Omphiscola glabra is very scattered and rare. It is seriously threatened, and has become locally extinct in many places. It is threatened by continuing habitat destruction because of drainage and intensive farming. Acriculturally induced eutrophication is also a threat. Omphiscola glabra has disappeared widely from urbanized areas such as London.
The shell is strongly cylindrical, horny, often with a brownish or blackish surface, the apex is blunt, 7-8 moderately convex whorls, with last whorl being twice as high as the narrow aperture, and with aperture often with white lip.
The height of the shell is 9–12 mm, up to 15 mm or up to 20 mm. The width of the shell is 3–4 mm, up to 5.5 mm.
This snail lives in places such as swampy meadows and ditches.
Omphiscola glabra is said to occur in small areas of standing water that have a lot of vegetation such as swamps, and also in standing forest waters with leaf litter, often in water with organic iron contents and low calcium contents.
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Wikipedia