''Perpolita hammonis'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

, a terrestrial

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the family

Gastrodontidae Gastrodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). MolluscaBase eds. (2020). MolluscaBase ...

. 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

Distribution

This species is known to occur in a number of countries and islands including: Nesovitrea-hammonis-map-eur-nm-moll

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...

Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. ''Journal of Conchology''. 41 (1): 91-109. *

Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It is ...

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

*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

.Wiese, V. (2014). ''Die Landschnecken Deutschlands: Finden - Erkennen – Bestimmen.'' Quelle & Meyer: Wiebelsheim. The 1.9-2.1 x 3.6-4.1 mm shell has 3-3.5 whorls. These are usually reddish brown, with regular radial riblets (9-14 riblets/mm).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.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.Welter-Schultes, F.W. 2012. ''European non-marine molluscs, a guide for species identification: Bestimmungsbuch für europäische Land- und Süsswassermollusken.'' Planet Poster Editions: Göttingen.

References

* Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 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.
{{Commons category Gastrodontidae Gastropods described in 1765 Taxa named by Hans Strøm