Ciliatovelutina lanigera Møller, 1842,

Phylum:Mollusca Linnaeus, 1758
Class:Gastropoda Cuvier, 1795
Order:Littorinimorpha Golikov & Starobogatov, 1975
Family:Velutinidae Gray, 1840
Genus:Ciliatovelutina Golikov & Gulbin, 1990
Synonyms:Velutina lanigera Møller, 1842

Description.  Shell broadly ear-shaped, with 1.5 whorls and deeply impressed su¬ture. Protoconch uncovered by periostracum, partly sunken into last whorl which occupies almost entire shell. Periostracum well developed, yellow or light grey-brown. Axial sculpture of lower periostracum wrinkles bears equally sized short setae. Spiral pattern of closely spaced periostracum wrinkles. Aperture oval, with calcareous inner lining. Outer and inner lips thickened in upper part.

Measurements. Largest seen specimen: height 12 mm, length 34 mm, width 22 mm.

Remarks. C. lanigera is easily separated from other members of the genus by a transverse, as distinct from spiral, arrangement of rows of setae which are equal in size and shorter than in other species.

Distribution. North Atlantic (Canada, Greenland, Iceland, Northern Norway), the Barents and Kara Seas, near the Arctic shores of Canada as well as the Bering and Okhotsk Seas.

Ecology. The species is found at depths from 10 to 500 m, prefering depths between 50 and 100 m. It is recorded from sand shell limestone, muddy sand as well as rocks, stones, and pebbles.

Literature

  • Gulbin V.V., Golikov A.N. A review of the prosobranch family Velutinidae in cold and temperate waters of the Northern Hemisphere. III. Velutininae. Genera Ciliatovelutina and Velutina

Author: Zakharov Denis V. / 13.02.2017
Last edit: Zakharov Denis V. / 07.03.2017

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