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Clelandella miliaris (Brocchi 1814)

Clelandella miliaris

provided by wikipedia EN

Clelandella miliaris is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[2]

Description

The size of the shell varies between 7 mm and 18 mm. The imperforate, rather thin, but pretty solid shell has a strictly conical shape. It is whitish or yellowish, with more or less obvious longitudinal flames, often reduced to a few spots on the ribs and a row of spots at the periphery of each whorl. The surface is densely finely sculptured by spiral lirae crossed by very regular oblique lamellae, producing a clathrate pattern. The spiral lirae number about 6 on each whorl, but often double as many, by the intercalation of riblets in the interstices. The periphery has a prominent keel, cord-like, with secondary spiral striae, or bifid, cut into compressed granules, somewhat prominent above the sutures. The base has about 8 concentric ribs. The interstices are radiately striate, sometimes with a central riblet. The spire has a conical shape with about 7 whorls. The periphery is acutely angled. The base of the shell is flat. The aperture is quadrangular. The short columella is nearly straight.[3]

Distribution

This marine species has a wide distribution. It occurs off Lofoten Islands, the North Sea (Norway to Gibraltar), off Cape Verde Islands, West Sahara and Mauritania; in the Mediterranean Sea and the Adriatic Sea. In the Baltic Sea it has become a vulnerable species.[4]

References

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Clelandella miliaris: Brief Summary

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Clelandella miliaris is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

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Biology

provided by World Register of Marine Species
Type of larval development: short planktonic, non-planktotrophic as usual in Vetigastropoda and Patellogastropoda.
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Diagnosis

provided by World Register of Marine Species
Shell conical, 10-14 mm high, with tiny protoconch of less than one whorl and teleoconch up to 7-8 whorls. Sculpture of beaded spiral cords as wide as interspaces, a thicker suprasutural rim continued on peripheral angle of last whorl, covered by several (usually 3-4, up to 10 on large specimens) smaller, beaded spiral threads. Abapical surface flat, imperforate, bearing 6-10 spiral cords as wide as or narrower than interspaces, more weakly beaded than spire cords. Shell colour whitish to yellowish, nacre showing through in some cases; broad brown flames starting from suture; peripheral rim white articulated by brown streaks.
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Distribution

provided by World Register of Marine Species
Atlantic Ocean, from Iceland and Norway to West Africa, and throughout the Mediterranean, common in 100-300 m depth.
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Gofas, Serge [email]