Vertigo lilljeborgi
Vertigo lilljeborgi is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the whorl snails.
Vertigo lilljeborgi | |
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A damaged shell of Vertigo lilljeborgi | |
Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
Superfamily: | |
Family: | |
Subfamily: | Vertigininae |
Tribe: | Vertiginini |
Genus: | |
Subgenus: | Vertigo |
Species: | V. lilljeborgi |
Binomial name | |
Vertigo lilljeborgi (Westerlund, 1871)[1] | |
Synonyms | |
Pupa lilljeborgi Westerlund, 1871 |
Distribution
The type locality for this species is on the southern shore of Tresjön Lake, near Ronneby, Blekinge province, in Sweden.[2]
This species is known to occur in a number of countries and islands in Northern Europe including:
- Great Britain, Wales, Scotland
- Ireland
- Denmark
- Germany
- Scandinavia: Sweden, ...
- Latvia
- and other areas
Shell description
The shell is ventricose, ovate, strongly glossy, very finely striate, chestnut horn-color. The shell has 5 whorls, 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.[2]
Aperture 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.[2]
The width of the adult shell varies from 1.25 to 1.5 mm, the height from 2-2.25 mm.[2]
Vertigo lilljeborgi, compared with Vertigo moulinsiana, is much smaller, more glossy, its whorls are more tumid, and its thinner lip lacks the broad, almost colorless margin of the latter.[2]
References
This article incorporates public domain text from reference.[2]
- Westerlund C. A. 1871. Exposé critique des mollusques de terre et d'eau douce de la Suède et de la Norvége. pp. [1-2], 1-200. Upsal. (Berling).
- Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 167–168.
External links
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