| Perpolita hammonis | |
|---|---|
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| Perpolita hammonis shells | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Gastrodontidae |
| Genus: | Perpolita |
| Species: | P. hammonis |
| Binomial name | |
| Perpolita hammonis (Strøm, 1765) | |
| Synonyms | |
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Perpolita hammonis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Gastrodontidae.
Distribution
This species is known to occur in a number of countries and islands including:
- Czech Republic
- Ukraine
- Great Britain
- Ireland
- Malaysia
- and other areas
Description
Perpolita hammonis has a light brown shell with about 3.5 whorls. The shell is shiny with characteristic regular, radial lines. These help as well to distinguish young N. hammonis from other young snails of the families Oxychilidae and Gastrodontidae.
The 1.9-2.1 x 3.6-4.1 mm (0.075-0.083 x 0.142-0.161 in) shell has 3-3.5 whorls. These are usually reddish brown, with regular radial riblets (9-14 riblets per mm, 7-11 riblets per 1⁄32 in). The umbilicus is open and not deep, and slightly excentric at the last whorl. Fresh shells have very faintly visible spiral lines under high magnification, about 10 spiral lines per radial riblet, 100-150 lines/mm (80-120 lines per 1⁄32 in). The animal is slender and blackish. The tentacles are black. The foot is narrow, and grey in colour with blackish upper sides and black spots on the sides. The mantle is light grey.
Habitat
The species can live in a wide range of habitats with dry to humid conditions. It can as well tolerate acidic soils. Nesiovitrea hammonis can live in open sites, like meadows, but it generally occurs in wooded habitats and is often found in beech forests.
References
- Strøm H. (1765). "Beskrivelse over Norske insecter, første stykke". Det Trondhiemske Selskabs Skrifter 3: 376-439, Tab. VI., page 435, Tab. VI, Fig. XVI.
- MolluscaBase eds. (2021). MolluscaBase. Perpolita hammonis (Strøm, 1765). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1002689 on 2021-12-28
- Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
- ^ Wiese, V. (2014). Die Landschnecken Deutschlands: Finden - Erkennen – Bestimmen. Quelle & Meyer: Wiebelsheim.
- "Species summary for Nesovitrea hammonis". AnimalBase, accessed 25 June 2014, last change 9 December 2013.
- Welter-Schultes, F.W. 2012. European non-marine molluscs, a guide for species identification: Bestimmungsbuch für europäische Land- und Süsswassermollusken. Planet Poster Editions: Göttingen.
- Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017.
- Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. Sofia/Moskva (Pensoft). 312 pp., 142 plates
External links
- Alder, J. (1830). A catalogue of the land and fresh-water testaceous Mollusca found in the vicinity of Newcastle upon Tyne, with remarks. Transactions of the Natural History Society of Northumberland and Durham. 1(1): 26-41
- Schileyko, A. A. & Rymzhanov, T. S. (2013). Fauna of land mollusks (Gastropoda, Pulmonata Terrestria) of Kazakhstan and adjacent territories. Moscow-Almaty: KMK Scientific Press. 389 pp.
| Taxon identifiers | |
|---|---|
| Perpolita hammonis | |
| Nesovitrea hammonis | |