Calliostoma annulatum

Last updated

Jeweled topsnail
Calliostoma annulatum 1.jpg
Calliostoma annulatum crawling on a kelp leaf
Calliostoma annulatum 2.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Calliostomatidae
Genus: Calliostoma
Species:
C. annulatum
Binomial name
Calliostoma annulatum
(Lightfoot, 1786)
Synonyms
  • Trochus annulatusMartyn, 1784
  • Trochus moniliferusPhil.
  • Trochus virgineusChemnitz
  • Zizyphinus annulatusMartyn, Reeve,

Calliostoma annulatum, also known as the purple-ring topsnail, blue-ring topsnail or jeweled topsnail, is a medium-sized sea snail with gills and an operculum. [1]

Contents

This is a sublittoral marine gastropod mollusk in the family Calliostomatidae. This snail lives off of the Pacific coast of North America.

Range of distribution

This top shell can be found in the littoral zone from Isla San Geronimo, Baja California, north to Forrester Island, Alaska.

Shell description

The shell height varies between 16 mm and 35 mm. The elevated-conic shell is imperforate and rather thin. This species is distinguished by its brilliantly colored shell, which is lustrous with a gold field, dotted with brown on the spiral rows of grains, the periphery or lower edge of each whorl encircled by a zone of violet or magenta stripes, the axis surrounded by a tract of the same. The brilliance of the colors fades somewhat once the animal dies. The thin shell shows numerous granulose spiral riblets, about 7 on the penultimate whorl, 9 or 10 on the base. It has few or none interstitial lirulae. The acute, reddish apex is minute. The sutures are slightly impressed. There are about 9 whorls, slightly convex, the last angular at periphery, flattened beneath. The rhomboidal aperture is oblique, fluted within. There is no umbilicus. [2] The head and foot of the animal has a yellow-orange color with brown spots. The color of the shell is gold with purple stripes.

Life habits

This species is fairly omnivorous, feeding seasonally on kelp, sessile fauna like bryozoans, and detritus.

Two individuals of Calliostoma annulatum are visible on this hydrocoral Hydrocoral with snails.jpg
Two individuals of Calliostoma annulatum are visible on this hydrocoral

Related Research Articles

<i>Calliostoma</i> Genus of gastropods

Calliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the Calliostoma top snails. Previously this genus was placed within the family Trochidae. Calliostoma is the type genus of the family Calliostomatidae.

<i>Calliostoma ligatum</i> Species of gastropod

Calliostoma ligatum, common name the blue top snail, is a small prosobranch trochid gastropod mollusk in the family Calliostomatidae, the Calliostoma top snails.

<i>Cantharidus opalus</i> Species of gastropod

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<i>Calliostoma africanum</i> Species of gastropod

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<i>Calliostoma crassicostatum</i> Species of gastropod

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<i>Calliostoma laugieri</i> Species of gastropod

Calliostoma laugieri is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Calliostoma marionae, common name Marion's top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma occidentale</i> Species of gastropod

Calliostoma occidentale, common name the boreal topsnail, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma ornatum</i> Ornate topshell, a marine gastropod mollusk in the family Calliostomatidae

Calliostoma ornatum, common name the ornate topshell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma perfragile</i> Species of gastropod

Calliostoma perfragile is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma zizyphinum</i> Species of gastropod

Calliostoma zizyphinum, common name the European painted top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma supragranosum</i> Species of gastropod

Calliostoma supragranosum Carpenter, 1864 is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, which was formerly placed within the Trochidae or top snails. Its common name is the granulated top snail.

<i>Calliostoma palmeri</i> Species of gastropod

Calliostoma palmeri, common name Palmer's top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma tricolor</i> Species of gastropod

Calliostoma tricolor, common name the three-coloured top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Zethalia zelandica</i> Species of gastropod

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<i>Astele scitula</i> Species of gastropod

Astele scitula is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma coppingeri</i> Species of gastropod

Calliostoma coppingeri is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma indiana</i> Species of gastropod

Calliostoma indiana is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

Calliostoma nepheloide, common name the Nephelo top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

<i>Calliostoma platinum</i> Species of gastropod

Calliostoma platinum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

References

  1. ↑ Rosenberg, G. (2012). Calliostoma annulatum (Lightfoot, 1786). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=534197 on 2012-12-10
  2. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
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