Umbonium costatum

Umbonium costatum is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[1][2]

Umbonium costatum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Umbonium
Species:
U. costatum
Binomial name
Umbonium costatum
(Kiener, 1839)
Synonyms
  • Globulus costata Valenciennes, 1838
  • Rotella costata Kiener, 1839 (original combination)
  • Umbonium (Suchium) costatum (Valenciennes, A. in Kiener, L.C., 1838)

Description

The size of the shell varies between 12 mm and 25 mm. The heavy, solid shell has a depressed shape. Its spire is low-conoidal, the periphery rounded. The color pattern is whitish or light yellow, closely tessellated all .over with blackish-olive or reddish-brown squarish spots. The tessellated color-markings sometimes form subcontinuous oblique bands. The surface is shining and polished, with strong spiral grooves above, generally 4 to 6 on the body whorl. The sutures are narrowly impressed, with a rather wide margin below them, which often shows a slight tendency to be tuberculate. The base of the shell is smooth, tessellated around the irregularly convex, flesh-colored central callus. The shell contains six whorls, the last a little concave above, convex beneath. The subquadrate aperture is pearly inside. The circular callus is heaviest in front of the aperture and behind the columellar lip. .[3]

Distribution

This species occurs in the Sea of Japan and in the East China Sea.

References
  1. Bouchet, P. (2012). Umbonium costatum (Kiener, 1839). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=556961 on 2012-11-23
  2. Kantor Yu.I. & Sysoev A.V. (2006) Marine and brackish water Gastropoda of Russia and adjacent countries: an illustrated catalogue. Moscow: KMK Scientific Press. 372 pp. + 140 pls.
  3. H. Pilsbry (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
  • Higo, S., Callomon, P. & Goto, Y. (1999) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Elle Scientific Publications, Yao, Japan, 749 pp.
  • To Barcode of Life (1 barcode)
  • To Biodiversity Heritage Library (15 publications)
  • To Encyclopedia of Life
  • To GenBank (5 nucleotides; 1 proteins)
  • To World Register of Marine Species
  • "Umbonium (Suchium) costatum". Gastropods.com. Retrieved 16 January 2019.
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