Aartsenia arctica

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Aartsenia arctica
Aartsenia arctica 001.png
Apertural view of a shell of Aartsenia arctica
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Aartsenia
Species:
A. arctica
Binomial name
Aartsenia arctica
(Dall & Bartsch, 1909)
Synonyms [1]
  • Odostomia arcticaDall & Bartsch, 1909
  • Odostomia (Amaura) arctica Dall & Bartsch (basionym)

Aartsenia arctica is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The species is one of the two species within the genus Aartsenia, with the exception of the other related species being Aartsenia candida . [1] [2]

Contents

Description

The straw-yellow shell is large and has an elongate-ovate shape. Its length measures 2.4 mm. (The whorls of the protoconch are decollated.) The turns of the whorls of the teleoconch turns are rounded, and have subtabulate summits. They are marked by lines of growth and numerous fine, closely placed, wavy, spiral striations. The periphery is well rounded. The sutures are well impressed. The base of the shell is rather elongated. It is marked like the space between the sutures. The aperture is pear-shaped, rather narrow posteriorily, and somewhat effuse anteriorly. The posterior angle is rendered obtuse by the tabulation. The outer lip is thin. The columella is short, curved, slightly reflected, reinforced by the attenuated base and provided with a weak fold at its insertion. The parietal wall is covered by a thin translucent callus. [3]

Distribution

This species occurs off Hagemeister Island, Bering Sea.

Habitat

This species is found in the following habitats: [1]

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References

  1. 1 2 3 WoRMS (2011). Aartsenia arctica (Dall & Bartsch, 1909). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=576636 on 2011-10-26
  2. ↑ Kantor Yu.I. & Sysoev A.V. (2006) Marine and brackish water Gastropoda of Russia and adjacent countries: an illustrated catalogue. Moscow: KMK Scientific Press. 372 pp. + 140 pls.
  3. ↑ Dall & Bartsch, A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p. 224; 1909 Plate 28 # 5
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