''Vertigo lilljeborgi'' 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 minute
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 ...
or
micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...
in the family
Vertiginidae, the whorl snails.
[MolluscaBase eds. (2023). MolluscaBase. Vertigo lilljeborgi (Westerlund, 1871). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1050668 on 2023-02-10]
;Subspecies:
* ''Vertigo lilljeborgi lilljeborgi''
(Westerlund, 1871)
* ''Vertigo lilljeborgi vinlandica''
Nekola, Chiba, Coles, Drost, Proschwitz & Horsák, 2018
Distribution
The
type locality for this species is on the southern shore of
Tresjön Lake, near
Ronneby
Ronneby is a locality and the seat of Ronneby Municipality in Blekinge County, Sweden with 12,029 inhabitants in 2010.
Ronneby is regarded as the heart of "the Garden of Sweden", and in 2005 the park "Brunnsparken" in Ronneby was voted Sweden's m ...
,
Blekinge
Blekinge (, old da, Bleking) is one of the traditional Swedish provinces (), situated in the southern coast of the geographic region of Götaland, in southern Sweden. It borders Småland, Scania and the Baltic Sea. It is the country's second ...
province, in Sweden.
This species is known to occur in a number of countries and islands in
Northern Europe
The northern region of Europe has several definitions. A restrictive definition may describe Northern Europe as being roughly north of the southern coast of the Baltic Sea, which is about 54th parallel north, 54°N, or may be based on other g ...
including:
*
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 ...
, Wales, Scotland
*
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 ...
* Denmark
*
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
* Scandinavia:
Sweden
Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...
, ...
*
Latvia
Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...
* and other areas
Shell description
The
shell is ventricose, ovate, strongly glossy, very finely striate, chestnut horn-color. The shell has 5
whorls
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral d ...
, rather rapidly increasing, convex, the last but little higher than the penult, double as high as the next earlier whorl, a little ascending in front.
Suture is slightly oblique.
Aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.
An opt ...
is quite piriform, or obliquely cordate, with 1 parietal tooth (sometimes with another punctiform one), 2 columellar teeth, the lower very small, often wanting; 2 short, high, equal, immersed teeth
in the palate, bounded by a reddish-brown streak in front. Peristome is weak, expanded, the margins delicately united; outer margin not impressed, scarcely produced angularly forward.
The width of the adult shell varies from 1.25 to 1.5 mm, the height from 2-2.25 mm.
''Vertigo lilljeborgi'', compared with ''
Vertigo moulinsiana
Desmoulin's whorl snail (''Vertigo moulinsiana'') is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.
This species was named in honor of th ...
'', is much smaller, more glossy, its whorls are more tumid, and its thinner lip lacks the broad, almost colorless margin of the latter.
References
This article incorporates public domain text from reference.
[ Pilsbry H. A. & Cooke C. M. 1918-1920. ''Manual of Conchology. Second series: Pulmonata.']
Volume 25
Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. pag
167
168.
* Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017.
External links
''Vertigo lilljeborgi'' at AnimalBaseConchSoc info on identifying the speciesWesterlund, C. A. (1871). Exposé critique des mollusques de terre et d'eau douce de la Suède et de la Norvége. Nova Acta Societatis Regiae Scientiarum Upsaliensis. series 3, 8, 1 (1): 1–200. Uppsala (BERLING)
{{Taxonbar, from=Q3198861
lilljeborgi
Gastropods described in 1871