Calliostoma punctulatum

Calliostoma punctulatum, the spotted tiger shell, is a species of medium-sized sea snail, a marine gastropod mollusc in the family Calliostomatidae, the calliostoma top snails.[1]

Calliostoma punctulatum
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Vetigastropoda
Family:
Calliostomatidae
Genus:
Calliostoma
Species:
C. punctulatum
Binomial name
Calliostoma punctulatum
(Martyn, 1784)
Synonyms[1]
  • Calliostoma stewartianum Oliver, 1926
  • Calliostoma wanganuicum Oliver, 1926
  • Calliostoma (Maurea) punctulatum punctulatum (Martyn, 1784)
  • Trochus diaphanus Gmelin, 1791
  • Trochus punctulatus Martyn, 1784
  • Turbo grandineus Valenciennes, 1846
  • Venustas punctulata (Martyn, 1784)
  • Venustas urbanior Finlay, 1926

Description

The height of the shell varies between 15 mm and 50 mm. The solid, conoidal shell is imperforate. It is yellowish or light fawn-colored, unicolored or dotted on the spirals with dark brown. The granules are often white by rubbing of the cuticle. The surface of the shell is covered with narrow spiral closely and conspicuously beaded ridges, numbering 8-12 on the penultimate whorl, sometimes equal in size, sometimes alternately larger and smaller. On the next earlier (antepenultimate) whorl there are about 7, and still earlier whorls have 3 beaded carinae. The interstices are obliquely striate. The spire is a little concave in outline toward the apex. The minute apex is acute. The sutures impressed. There are about 8 or 9, convex whorls. The body whorl is rounded at the periphery. The oblique aperture is rhomboidal, pearly within, and showing folds in the nacre corresponding with the lirae outside. The pearly columella is arcuate and not tubercled below.[2]

Distribution

This marine species is endemic to New Zealand found on rocks and at intertidal depths.

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References
  1. WoRMS (2010). Calliostoma punctulatum (Martyn, 1784). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=467245 on 2012-12-14
  2. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
  • Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  • Marshall, 1995. A revision of the recent Calliostoma species of New Zealand (Mollusca:Gastropoda:Trochoidea). The Nautilus 108(4):83-127
  • "Calliostoma (Maurea) punctulatum punctulatum". Gastropods.com. Retrieved 15 January 2019.
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