Helicella itala
| Helicella itala | |
|---|---|
 | |
| shell of Helicella itala | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra |
| Superfamily: | Helicoidea |
| Family: | Hygromiidae |
| Genus: | Helicella |
| Species: | H. itala |
| Binomial name | |
| Helicella itala (Linnaeus, 1758) | |
Helicella itala is a species of medium-sized, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies. The common Heath snail is a West Palearctic species found in the British Isles, France, Belgium, Netherlands, Switzerland, Denmark, Germany, Austria, Czech Republic and Poland. It is now also widely distributed in Australia (first found in Australia in 1891).In English it is known as the Heath snail.
Life cycle
The size of the egg is 1.5 mm.[1]
This species of snail makes and uses love darts during mating.
Description
The 12-20 mm. shell is broad and very depressed with an open coil forming a convex, low spire. The umbilicus is very wide. The whorls are slightly convex and have shallow sutures. The aperture is elliptical and lacks an internal rib. The surface (periostracum) is white or pale yellow-brown and dark brown or yellow-brown spiral bands and fine irregular growth ridges.
_banded_form%2C_apical.jpg)
banded form, apical side_banded_form%2C_umbilical.jpg)
banded form, umbilical side_white_form%2C_apical.jpg)
white form, apical side_white_form%2C_umbilical.jpg)
white form, umbilical side
Habitat
The animals live on dry, exposed habitats, such as roadsides and railway embankments, vegetated sand dunes and rock boulders and short grassland. They rise up to 2000 m above sea level in the Alps and Pyrenees.
References
- ↑ Heller J.: Life History Strategies. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited page: 428.
External links
- Helicella itala at Animalbase taxonomy, short description, distribution, biology,status (threats), images
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