Punctum pygmaeum | |
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An apical view of a shell of Punctum pygmaeum | |
A basal view of a shell of Punctum pygmaeum | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
(unranked): | clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora |
Superfamily: | Punctoidea |
Family: | Punctidae |
Genus: | Punctum |
Species: | P. pygmaeum |
Binomial name | |
Punctum pygmaeum (Draparnaud, 1801) |
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Synonyms | |
Helix pygmæa Draparnaud, 1801 |
Helix pygmæa Draparnaud, 1801
Punctum pygmaeum is a species of very small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Punctidae, the dot snails.
For terms see gastropod shell The shell is very small, 1.2-1.6 mm in width.
The 0.6-0.8 x 1.2-1.6 mm. shell is almost flat, extremely densely and regularly striated, appearing silky shiny light horny brown. There are 3-3.5 moderately convex whorls, the aperture is rounded, with a thin margin which is not reflected and without a lip.The umbilicus is wide (25 % of shell diameter).
This species occurs in countries and islands including: