Punctum pygmaeum
| Punctum pygmaeum | |
|---|---|
 | |
| 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)[1] | |
| Synonyms | |
|
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.
Shell description
For terms see gastropod shell The shell is very small, 1.2-1.6 mm in width.[2]
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).[3]
Distribution
This species occurs in countries and islands including:
- Czech Republic
- Great Britain
- Ireland
- Slovakia
- Poland
- Ukraine[4]
- Netherlands
- Latvia
- Bulgaria
- and other areas
References
- ↑ Draparnaud J. P. R. 1801. Tableau des mollusques terrestres et fluviatiles de la France. pp. [1-2], 1-116. Montpellier, Paris. (Renaud; Bossange, Masson & Besson).
- ↑ http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=1856 (Welter-Schultes)]
- ↑ Animalbase (Welter-Schultes)
- ↑ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
External links
- Punctum pygmaeum at Animalbase taxonomy,short description, distribution, biology,status (threats), images
- Punctum pygmaeum images at Encyclopedia of Life
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