Biology:Calliostoma adspersum

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Short description: Species of gastropod

Calliostoma adspersum
Calliostoma adspersum 001.jpg
Apertural view of a shell of Calliostoma adspersum
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Calliostomatidae
Subfamily: Calliostomatinae
Genus: Calliostoma
Species:
C. adspersum
Binomial name
Calliostoma adspersum
(Philippi, 1851)
Synonyms
  • Trochus adspersus Beck
  • Trochus eximius Philippi,
  • Zizyphinium adspersum Beck

Calliostoma adspersum, common name the spotted Brazilian top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[1]

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.[2]

Distribution

This marine species occurs from Colombia to Southern Brazil .

References

External links

Wikidata ☰ Q3740459 entry