Microstelma

Microstelma
Shell of Microstelma oshikatai
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Zebinidae
Genus:	Microstelma A. Adams, 1863
Type species
Microstelma daedalum A. Adams, 1863
Synonyms
AmaurellaA. Adams, 1867 CrepitacellaGuppy, 1867 DolophanesGabb, 1873 † Rissoina (Crepitacella)Guppy, 1867 Stylifer (Amaurella)A. Adams, 1867

Microstelma is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Zebinidae. ^[1]

Description

(Original description in Latin) The shell is turreted-ovate with a narrow slit and features a conical spire. The whorls are adorned with prominent longitudinal folds. The aperture is oblong, extended anteriorly, and subtly channeled. The inner lip is thickened and nearly straight, while the outer lip is simple. ^[2]

Species

Species within the genus Microstelma include:

• † Microstelma arescum (Woodring, 1928)
• † Microstelma bellardii O. Semper, 1865
• Microstelma canaliculatum (E. A. Smith, 1890)
• † Microstelma cepula (Guppy, 1866)
• Microstelma columbella (Dall, 1881) ^[3]
• Microstelma daedalum A. Adams, 1863
• Microstelma gabbi (Dall, 1889)
• Microstelma glabratum (A. Adams, 1878)
• † Microstelma italicum Tabanelli, 1994
• Microstelma japonicum (A. Adams, 1867)
• † Microstelma lapernai Landau, Marquet & Grigis, 2004
• † Microstelma limonense (Olsson, 1922)
• Microstelma lutaoi Chang & Wu, 2004
• † Microstelma melanoides (Gabb, 1873)
• † Microstelma obliquecostatum (P. Marshall & Murdoch, 1920)
• Microstelma oshikatai Lan, 2003 ^[4]
• Microstelma semistriatum (A. Adams, 1878)
• † Microstelma sophiae Gardella & Tabanelli, 2016
• Microstelma vestale (Rehder, 1943) ^[5]

Species brought into synonymy

• † Microstelma altispira(O. Haas, 1942): synonym of † Hemisinus altispira (O. Haas, 1942) (superseded combination)
• † Microstelma capula(Guppy, 1866): synonym of † Microstelma cepula(Guppy, 1866) (incorrect spelling)
• Microstelma concinnaA. Adams, 1870: synonym of Microstelma concinnumA. Adams, 1870 synonym of Moerchiella dorbignyi (A. Adams, 1853) (incorrect gender ending of specific epithet)
• Microstelma concinnumA. Adams, 1870 : synonym of Moerchiella dorbignyi (A. Adams, 1853) (junior synonym)
• Microstelma daedala [sic]: synonym of Microstelma daedalumA. Adams, 1863
• Microstelma egregia(Dall, 1889): synonym of Costaclis egregia (Dall, 1889)
• Microstelma flavaOkutani, 1964: synonym of Punctulum flavum (Okutani, 1964)
• Microstelma formosaChang & Wu, 2004: synonym of Rissoina formosa (Chang & Wu, 2004)
• Microstelma glabrata [sic]: synonym of Microstelma glabratum(A. Adams, 1878)
• † Microstelma italicaTabanelli, 1994: synonym of † Microstelma italicum Tabanelli, 1994 (incorrect gender ending of specific epithet)
• Microstelma japonica(A. Adams, 1860): synonym of Microstelma japonicum (A. Adams, 1860) (incorrect gender agreement of specific epithet)
• Microstelma japonicus [sic]: synonym of Microstelma japonicum(A. Adams, 1867)
• † Microstelma limonensis [sic]: synonym of † Microstelma limonense(Olsson, 1922) (incorrect gender ending of specific epithet)
• Microstelma semistriata [sic]: synonym of Microstelma semistriatum(A. Adams, 1878)

References

1. Microstelma A. Adams, 1863 . Retrieved through: World Register of Marine Species  on 3 December 2018.
2. Adams, A. (1863). "On Microstelma and Onoba, two forms of rissoid gastropods; with notices of new species of the latter from Japan". The Annals and Magazine of Natural History. 3 (11): 347. This article incorporates text from this source, which is in the public domain .
3. Microstelma columbella (Dall, 1881) . Retrieved through: World Register of Marine Species  on 9 August 2010.
4. Microstelma Oshikatai Lan, 2003 . Retrieved through: World Register of Marine Species  on 9 August 2010.
5. Microstelma vestale (Rehder, 1943) . Retrieved through: World Register of Marine Species  on 9 August 2010.

• Ponder W. F. (1985) A review of the genera of the Rissoidae (Mollusca: Mesogastropoda: Rissoacea). Records of the Australian Museum supplement 4: 1-221
• Spencer, H.G., Marshall, B.A. & Willan, R.C. 2009 Recent Mollusca. pp 196–219 in: Gordon, D.P. (Ed.), The New Zealand inventory of biodiversity. 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch

External links

• Guppy, R.J.L. (1867). "Notes on West Indian geology, with remarks on the existence of an Atlantis in the early Tertiary period; and descriptions of some new fossils, from the Caribean Miocene". The Geological Magazine. 4 (41): 500. Bibcode:1867GeoM....4..496G. doi:10.1017/S0016756800208820.
• Gabb, W.M. (1873). "Description of some new genera of Mollusca". Proceedings of the Academy of Natural Sciences of Philadelphia. 24: 273.
• Adams, A. (1867). "Descriptions of new species of shells from Japan". Proceedings of the Zoological Society of London. 1867: 311.