Otukaia

Otukaia
Otukaia
Drawing of the apertural view of the shell of Otukaia kiheiziebisu
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Vetigastropoda
Superfamily: Trochoidea
Family: Calliostomatidae
Genus: Otukaia
Ikebe, 1942[1]
Species

See text.

Otukaia is a genus of medium-sized sea snails, marine gastropod molluscs in the family Calliostomatidae, the top shells. Otukaia has long been considered a subspecies of Calliostoma and is still treated as such by many authorities.

Snails in this genus are characterized by their relatively large, silky-white, thin shell. They lack an umbilicus. Their spiral whorls are flat to slightly convex. The first three spiral cords can show some sculpture that may persist on later whorls. They have a rachidian radula. They can be found world-wide in deep water.

Some authors use Otukaia Ikebe, 1942 as a subgenus in Calliostoma Swainson, 1840.[2]

The (sub)generic name Otukaia is named in honor of the Japanese malacologist Yanosuke Otuka (1903–1950), who described the type species Calliostoma kiheiziebisu Otuka, 1939.[3]

Species

Species in the genus Otukaia include:[4][5]

  • Otukaia blacki Dell, 1956
  • Otukaia crustulum Vilvens & Sellanes, 2006[6]
  • Otukaia eltanini
  • Otukaia kiheiziebisu Otuka, 1939 - synonym: Calliostoma kiheiziebisu Otuka, 1939. - the type species of the subgenus Otukaia.[7]
  • Otukaia otukai Ikebe, 1942
  • Otukaia rossica (Dall, 1919) - Russian margarite

Synonyms:

References

  1. ^ Ikebe (1941) Venus 11: 60; Ikebe (1942) Jap. J. geol. geogr. 18(4): 277.
  2. ^ WoRMS (2010). Otukaia Ikebe, 1942. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=456482 on 2010-04-22
  3. ^ (Japanese) (English) Otuka Y. (1939). "日本産エビスガヒ屬の一新種 A new Calliostoma from Japan". Venus 9(1): 27–29. CiNii.
  4. ^ Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  5. ^ NZ Mollusca
  6. ^ Vilvens & Sellanes (2006). The Nautilus 120(1): 15-20.
  7. ^ http://www.gastropods.com/Taxon_pages/Family_CALLIOSTOMATIDAE_CALLIOSTOMATINAE.shtml accessed 16 June 2010
  8. ^ WoRMS (2010). Calliostoma ikukoae (Sakurai, 1994). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=467203 on 2011-04-24


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