Microstelma

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

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.

Species

Species within the genus Microstelma include:

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

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 (superseded combination)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

References

• 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