Umbonium costatum
| Umbonium costatum | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| 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)
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| Synonyms | |
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Umbonium costatum is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[1][2]
Description
[edit]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
[edit]This species occurs in the Sea of Japan and in the East China Sea.
In culture
[edit]In Japan, the snail is called kisago, and its shell was once used as pieces for ohajiki, a children's game similar to marbles.[4]
References
[edit]- ^ 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
- ^ 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.
- ^ H. Pilsbry (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
- ^ おはじき - Kotobank（『日本大百科全書』小学館）
- 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.
External links
[edit]
- Barcode of Life (1 barcode)
- Biodiversity Heritage Library (15 publications)
- Encyclopedia of Life
- GenBank (5 nucleotides; 1 proteins)
- World Register of Marine Species
- "Umbonium (Suchium) costatum". Gastropods.com. Retrieved 16 January 2019.