Vallonia pulchella
| Vallonia pulchella | |
|---|---|
 |
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| A live individual of Vallonia pulchella | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): |
clade Heterobranchia clade Euthyneura |
| Superfamily: | Pupilloidea |
| Family: | Valloniidae |
| Genus: | Vallonia |
| Species: | V. pulchella |
| Binomial name | |
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Vallonia pulchella (O. F. Müller, 1774) |
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| Synonyms | |
|
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clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Orthurethra
Vallonia pulchella, common name the lovely vallonia, is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Valloniidae.
For terms see gastropod shell
The shell is circular in outline, with 3.2 - 3.3 whorls. The last whorl is wider immediately before the aperture, and is not much descending. Compared to Vallonia costata, the aperture is not very oblique, and the lip is weaker than in that species. Vallonia pulchella also has slightly more elevated whorls than Vallonia costata. Like other Vallonia species, the umbilicus is very wide.
The shell is ivory-white with very fine and irregular streaks. The soft parts are milky white. The tentacles are short, and the posterior end of the foot is round.
This species occurs in countries and islands including:
Europe:
America:
The size of the egg is 0.5 mm.
In this species some parental care was observed: apparently the eggs were cleaned of fungi. Parental care is very rare in gastropods in general and has otherwise been observed only in the genus Libera.
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