Clelandella miliaris

Clelandella miliaris
Drawing with two views of a shell of Clelandella miliaris
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Superfamily: Trochoidea
Family: Trochidae
Genus: Clelandella
Species: C. miliaris
Binomial name
Clelandella miliaris
(Brocchi, 1814)[1]
Synonyms[2]
  • Calliostoma miliaris (Brocchi, 1814)
  • Clelandella clelandi (W. Wood, 1828)
  • Conulus millegranus Philippi
  • Jujubinus clelandi (Wood, 1828)
  • Jujubinus miliaris (Brocchi, 1814)
  • Trochus clelandi W. Wood, 1828
  • Trochus clelandianis Leach
  • Trochus elegans Jeffreys
  • Trochus martini Smith, J., 1839
  • Trochus miliaris Brocchi, 1814 (original description)
  • Trochus millegranus Philippi, 1836
  • Trochus millegranus var. pyramidata Jeffreys 1865
  • Ziziphinus millegranus Philippi

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

  1. ↑ Brocchi G. B. (1814). Conchiologia fossile subappenninica con osservazioni geologiche sugli Appennini e sul suolo adiacente. Milano Vol. I: pp. LXXX + 56 + 240; Vol. II, p. 241-712, pl. 1-16. World Register of Marine Species, Retrieved 1 May 2010.
  2. 1 2 Clelandella miliaris (Brocchi, 1814). Gofas, S. (2009). Clelandella miliaris (Brocchi, 1814). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2009) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141774 on 5 September 2010.
  3. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Calliostoma miliaris)
  4. ↑ HELCOM (2013). "HELCOM Red List of Baltic Sea species in danger of becoming extinct" (PDF). Baltic Sea Environmental Proceedings (140): 66.
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