Vertigo pusilla

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Vertigo pusilla
Vertigo pusilla shell.jpg
Apertural view of a shell of Vertigo pusilla
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Family: Vertiginidae
Subfamily: Vertigininae
Genus: Vertigo
Species:
V. pusilla
Binomial name
Vertigo pusilla
Synonyms
  • Helix vertigoGmelin, 1791 (junior synonym)
  • Pupa cleveiWesterlund, 1887 (junior synonym)
  • Pupa collinaWesterlund, 1871 (junior synonym)
  • Pupa otostomaWesterlund, 1871 (junior synonym)
  • Vertigo (Vertigo) pusillaO. F. Müller, 1774 alternate representation
  • Vertigo heterostrophaW. Turton, 1831 (junior subjective synonym)
  • Vertigo tumidaWesterlund, 1867

Vertigo pusilla is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the whorl snails. [3]

Contents

Vertigo pusilla is the type species of the genus Vertigo.

Subspecies
Drawing of a shell Vertigo pusilla - Holocene Beveren-Waes-a.png
Drawing of a shell

Shell description

1,66 to 2,18 mm high and 1,01 to 1,20 mm wide Shell subfusiform, with, somewhat of a quadrangular outline, thin and semitransparent, very glossy, horn-color, with a faint tinge of yellow, very slightly and remotely striate in the line of growth; periphery rounded, with a tendency to angularity; epidermis thin; whorls 4 ½ or 5, very convex and cylindrical, gradually increasing in size, the penultimate whorl as broad as the last, which occupies about two-fifths of the shell. Spire is shortish, but rather tapering, and blunt at the point. Suture is very deep. [4]

Aperture is semioval, contracted or sinuous in the middle of the outer edge; teeth six or seven, viz. two on the pillar [parietal wall], two on the pillar lip (the inner one of which is always larger, and the outside one tubercular and placed in the angle where the outer lip joins), and two or three within the outer lip (the third, when it is present, placed near the pillar lip and being a mere tubercle:) outer lip rather thick and slightly reflected, strengthened by a strong rib both outside and inside, which is situate near the opening of the mouth and is yellowish-white; outer edge rather abruptly inflected; inner lip slightly thickened in full grown specimens; umbilicus small and narrow, contracted by a rather sharp and gibbous crest or ridge at the base of the shell. [4]

Distribution

Distribution Vertigo-pusilla-map-eur-nm-moll.jpg
Distribution

This snail occurs in European countries and islands including:

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References

This article incorporates public domain text from reference. [4]

  1. ↑ Neubert, E. (2011). "Vertigo pusilla". IUCN Red List of Threatened Species . IUCN. 2011: e.T156321A4927265.
  2. ↑ Müller O. F. 1774. Vermivm terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. Volumen alterum. pp. I-XXVI [= 1-36], 1-214, [1-10]. Havniae & Lipsiae. (Heineck & Faber).
  3. ↑ MolluscaBase eds. (2023). MolluscaBase. Vertigo pusilla O. F. Müller, 1774. Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=426426 on 2023-02-11
  4. 1 2 3 Pilsbry H. A. & Cooke C. M. 1918-1920. Manual of Conchology. Second series: Pulmonata. Volume 25. Pupillidae (Gastrocoptinae, Vertigininae). Philadelphia. page 161.
  5. ↑ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.

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