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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Panpulmonata
Superordo: Eupulmonata
Ordo: Stylommatophora
Subordo: Helicina
Infraordo: Helicoidei
Superfamilia: Helicoidea

Familia: Helicidae
Subfamilia: Helicinae
Tribus: Allognathini
Genus: Hemicycla

Hemicycla Swainson, 1840

Alonso, M.R.; Ibanez, M. 2007: Anatomy and function of the penial twin papillae system of the Helicinae (Gastropoda: Helicoidea: Helicidae) and description of two new, small Hemicycla species from the laurel forest of the Canary Islands. Zootaxa, 1482: 1–23. Abstract & excerpt
Castro, J.M. et al. 2012: Hemicycla (Hemicycla) fuenterroquensis (Gastropoda: Helicoidea: Helicidae), a new species from La Palma, Canary Islands. Zootaxa 3527: 72–78. Preview Reference page.
Neiber, M.T. et al. 2011: Hemicycla (Adiverticula) diegoi (Gastropoda: Pulmonata: Helicidae), a new species from Tenerife, Canary Islands, with a phylogenetic analysis of conchologically similar species in the genus Hemicycla Swainson, 1840. Zootaxa, 2757: 29–46. Preview

Hemicycla is a genus of medium-sized air-breathing land snails, terrestrial pulmonate gastropods in the family Helicidae, the typical snails. [2]

Species within the genus Hemicycla include:

Hemicycla adansoni P.B. Webb & S. Berthelot, 1833
Hemicycla berkeleii (R. T. Lowe, 1861)
Hemicycla bethencourtiana (Shuttleworth, 1852)
Hemicycla bidentalis (Lamarck, 1822)
Hemicycla cardiobola (J. Mabille, 1882) †
Hemicycla collarifera O. Boettger, 1908 †
Hemicycla consobrina (A. Férussac, 1822)
† Hemicycla desculpta (Mousson, 1872)
Hemicycla diegoi Neiber, R. Vega-Luz, R. Vega-Luz & Koenemann, 2011
† Hemicycla digna (Mousson, 1872)
Hemicycla distensa (Mousson, 1872)
Hemicycla efferata (Mousson, 1872)
Hemicycla ethelema (J. Mabille, 1882)
Hemicycla eurythyra O. Boettger 1908 - endemic to Tenerife[3]
Hemicycla flavistoma Ibáñez & Alonso, 1991
Hemicycla fritschi (Mousson, 1872)
Hemicycla fuenterroquensis Castro, Yanes, Alonso & Ibáñez, 2012
Hemicycla fulgida Alonso & Ibáñez, 2007
Hemicycla gaudryi (d'Orbigny, 1839)
Hemicycla glasiana (Shuttleworth, 1852)
Hemicycla glyceia (J. Mabille, 1882)
Hemicycla gomerensis (Morelet, 1864)
Hemicycla granomalleata (Wollaston, 1878)
Hemicycla guamartemes (Grasset, 1857)
Hemicycla hedybia (J. Mabille, 1882)
Hemicycla idairae Verbinnen & Swinnen, 2014;
Hemicycla incisogranulata (Mousson, 1872)
Hemicycla inutilis (Mousson, 1872)
Hemicycla invernicata (Mousson, 1872)
Hemicycla laurijona Alonso & Ibáñez, 2007
Hemicycla mascaensis Alonso & Ibáñez, 1988
Hemicycla maugeana (Shuttleworth, 1852)
Hemicycla melchori R. Vega-Luz & R. Vega-Luz, 2008
† Hemicycla merita (Mousson, 1872)
Hemicycla modesta (A. Férussac, 1822)
† Hemicycla montefortiana Beck & Rähle, 2006
† Hemicycla moussoniana (Wollaston, 1878)
Hemicycla paeteliana (L. Pfeiffer, 1859)
Hemicycla paivanopsis (J. Mabille, 1882)
Hemicycla perraudierei (Grasset, 1857)
† Hemicycla perrieri (J. Mabille, 1882)
Hemicycla planorbella (Lamarck, 1816)
Hemicycla plicaria (Lamarck, 1816)
Hemicycla pouchadan Ibáñez & Alonso, 2007
Hemicycla pouchet (A. Férussac, 1821)
Hemicycla psathyra (R. T. Lowe, 1861)
Hemicycla quadricincta (Morelet, 1864)
Hemicycla saponacea (R. T. Lowe, 1861)
Hemicycla sarcostoma (Webb & Berthelot, 1833)
Hemicycla saulcyi (d'Orbigny, 1839)
† Hemicycla semitecta (Mousson, 1872)
Hemicycla vermiplicata (Wollaston, 1878)


Swainson W. J. (1840). Treat. Malacol. 164: 331.
MolluscaBase eds. (2021). MolluscaBase. Hemicycla Swainson, 1840. Accessed through: World Register of Marine Species at: on 2021-02-27

Yanes Y., Martín J., Artiles M., Moro L., Alonso M. R. & Ibáñez M. (2009). "Rediscovery and redescription of an almost unknown Hemicycla species (Gastropoda, Pulmonata, Helicidae): H. eurythyra O. Boettger 1908 from Tenerife, Canary Islands". Journal of Conchology 40(1): 31-36. abstract[permanent dead link].

Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017

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