Microstelma

(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. {{cite journal |last1=Adams |first1=A. |title=On Microstelma and Onoba, two forms of rissoid gastropods; with notices of new species of the latter from Japan |journal=The Annals and Magazine of Natural History |date=1863 |volume=3 |issue=11 |page=347 |url=https://www.biodiversitylibrary.org/page/22221801}} {{source-attribution}}

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){{WRMS species|419623|Microstelma columbella (Dall, 1881)||9 August 2010}}
• 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{{WRMS species|395912|Microstelma Oshikatai Lan, 2003||9 August 2010}}
• Microstelma semistriatum (A. Adams, 1878)
• †Microstelma sophiae Gardella & Tabanelli, 2016
• Microstelma vestale (Rehder, 1943){{WRMS species|419624|Microstelma vestale (Rehder, 1943)||9 August 2010}}

;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• † Microstelma altispira (O. Haas, 1942): synonym of † Hemisinus altispira (O. Haas, 1942) (superseded combination)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 concinna A. Adams, 1870: synonym of Microstelma concinnum A. Adams, 1870 synonym of Moerchiella dorbignyi (A. Adams, 1853) (incorrect gender ending of specific epithet)
• Microstelma concinnum A. Adams, 1870 : synonym of Moerchiella dorbignyi (A. Adams, 1853) (junior synonym)
• Microstelma daedala [sic]: synonym of Microstelma daedalum A. Adams, 1863
• Microstelma egregia (Dall, 1889): synonym of Costaclis egregia (Dall, 1889)
• Microstelma flava Okutani, 1964: synonym of Punctulum flavum (Okutani, 1964)
• Microstelma formosa Chang & Wu, 2004: synonym of Rissoina formosa (Chang & Wu, 2004)
• Microstelma glabrata [sic]: synonym of Microstelma glabratum (A. Adams, 1878)
• † Microstelma italica Tabanelli, 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)

{{Reflist}}

• [http://australianmuseum.net.au/journal/Ponder-1985-Rec-Aust-Mus-Suppl-4-1221/ 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

• {{cite journal |last1=Guppy |first1=R.J.L. |title=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 |journal=The Geological Magazine |date=1867 |volume=4 |issue=41 |page=500 |doi=10.1017/S0016756800208820 |bibcode=1867GeoM....4..496G |url=https://www.biodiversitylibrary.org/page/32512369#page/552/}}
• {{cite journal |last1=Gabb |first1=W.M. |title=Description of some new genera of Mollusca |journal=Proceedings of the Academy of Natural Sciences of Philadelphia |date=1873 |volume=24 |page=273 |url=https://www.biodiversitylibrary.org/page/26297047}}
• {{cite journal |last1=Adams |first1=A. |title=Descriptions of new species of shells from Japan. |journal=Proceedings of the Zoological Society of London |date=1867 |volume=1867 |page=311 |url=https://www.biodiversitylibrary.org/page/29533749}}

{{Commons category}}

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Category:Zebinidae

Category:Gastropod genera

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