Kingdom Animalia Class Gastropoda Superfamily Trochoidea Rank Species | Phylum Mollusca Clade Vetigastropoda Family Calliostomatidae | |
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Similar Calliostoma jujubinum, Calliostoma bonita, Calliostoma haliarchus, Calliostoma gloriosum | ||
Calliostoma adspersum, common name the spotted Brazilian top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Contents
Description
The length of the shell varies between 16 mm and 28 mm. The conical shell is imperforate, whitish-gray, flammulated with rufous, and encircled by delicate granulate threads. The plane whorls are angulated with a sharp carina a little above the sutures, the last one biangulate with a second carina. The sculpture of the upper surface consists of five, fine thread-like or hair-like granulate spirals, the last forming the sharp carina over the suture. There are in the interstices finer granulose lines. The base of the shell is a little convex with 9 to 10 concentric, little elevated smooth lirae, nearly as broad as their interstices. The aperture is rhomboidal with rounded angles. The oblique columella is cylindrical and subdentate at its base, bounded by a pit at its insertion.
Distribution
This marine species occurs from Colombia to Southern Brazil.