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Taxon profile

species

Calliostoma simplex Schepman, 1908

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Trochida »  family Calliostomatidae »  genus Calliostoma

Images

Calliostoma simplex

Author: Poppe, G. et al

Calliostoma simplex

Author: Schepman, M.M.

Calliostoma simplex

Author: Marshall, B.

Calliostoma simplex

Author: Vilvens

Calliostoma simplex

Author: Poppe, G.T.

Taxon in country check-lists*

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Description

Shell elevated conical, imperforate, unicoloured, yellowish. Whorls 7,5 slightly convex, with spiral lirae. increasing from 2 on the upper body whorl, to 6 on the penultimate and 7 on the upper surface of the ultimate one; suture not deep but distinct, accompanied by the upper part of a nearly covered spiral. The spirals are closely beset with compressed beads; the upper row of each whorl is slightly the largest. Last whorl angular, keeled by the last spiral. Base nearly flat, with 10 conspicuous, beaded spirals and a few very thin ones near the aperture. Moreover the whole shell is covered with oblique, undulating, slightly laminar, radiating striae, very distinct on the base. Aperture subquadrate, outer margin thin, a little convex, with 5 spiral grooves, basal margin convex. Columella cylindrical, slightly concave, patulous but not toothed at the base, interiorly ending in a flat layer of nacre, running over the basal margin. Alt. 14 mm, diam. maj. 11,5 mm apert. alt. 4,75 mm, lat. 5 mm.
Schepman, 1908. The prosobranchia of the Siboga expedition. Part I: Rhipidoglossa and Docoglossa. (Original description)

Interchangeable taxa

Resembling in shape C. apicinum Dall, but differing by its colour, especially by its coarser sculpture, its simple columella and not the least, by its size.

Distribution

Indonesia. Maluku. Kepulauan Kai.
Author: Jan Delsing

Similar species

Maurea regalis (B. A. Marshall, 1995)

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Calliostoma simplex Schepman, 1908]
Data retrieved on: 21 July 2015

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