Gymnarion

Gymnarion
Shell of Gymnarion gomesiana (syntype at MNHN, Paris)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Infraorder:	Limacoidei
Superfamily:	Helicarionoidea
Family:	Urocyclidae
Genus:	Gymnarion Pilsbry, 1919
Type species
Helicarion aloysii-sabaudiaePollonera, 1906
Synonyms
Helicarion (Gymnarion)Pilsbry, 1919

Gymnarion is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the family Urocyclidae. ^[1]

Description

(Original description) These helixarionid snails possess minute, remote right and left shell-lobes. The penis features a subterminal retractor muscle and an epiphallus, the latter lacking a flagellum or other appendages. A long, club-shaped dart sac (amatorial gland) is present. ^[2]

Species

Species within the genus Gymnarion include:

• Gymnarion aloysiisabaudiae (Pollonera, 1906)
• Gymnarion anchora E. Binder, 1971
• Gymnarion apertus E. Binder, 1979
• Gymnarion bequaerti E. Binder, 1979
• Gymnarion cheranganiensis Connolly, 1925
• Gymnarion chinegris E. Binder, 1979
• Gymnarion chirindicus E. Binder, 1981
• Gymnarion columna E. Binder, 1971
• Gymnarion corneola (Morelet, 1867)
• Gymnarion coronatus E. Binder, 1976
• Gymnarion ducae E. Binder, 1976
• Gymnarion gomesiana (Morelet, 1867)
• Gymnarion grandis (H. Beck, 1838)
• Gymnarion grossans E. Binder, 1971
• Gymnarion masukuensis (E. A. Smith, 1899)
• Gymnarion medjensis Pilsbry, 1919
• Gymnarion membranaceus (Thiele, 1911)
• Gymnarion nyasanus (E.A. Smith, 1899)
• Gymnarion plicatulus (E. von Martens, 1876)
• Gymnarion scutum E. Binder, 1971
• Gymnarion sigaretinus (Récluz, 1841)
• Gymnarion sowerbyanus (L. Pfeiffer, 1849)
• Gymnarion tanganyicae (E. von Martens, 1895)
• Gymnarion upembae E. Binder, 1979
• Gymnarion vanmoli E. Binder, 1979
• Gymnarion vumbae E. Binder, 1981
• Gymnarion wittei E. Binder, 1979

Species brought into synonymy

• Gymnarion (Lacrimarion) lacrimosusConnolly, 1929 : synonym of Lacrimarion lacrimosus (Connolly, 1929) (superseded combination)
• Gymnarion aloysii-sabaudiae(Pollonera, 1906) : synonym of Gymnarion aloysiisabaudiae(Pollonera, 1906) (incorrect original spelling)
• Gymnarion lacrimosusConnolly, 1929 : synonym of Lacrimarion lacrimosus (Connolly, 1929) (original combination)

References

1. MolluscaBase eds. (2020). MolluscaBase. Gymnarion Pilsbry, 1919. Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=996906 on 14 January 2021
2. Pilsbry, H.A. (1919). A review of the land mollusks of the Belgian Congo chiefly based on the collections of the American Museum Congo Expedition, 1909–1915. Bulletin of the American Museum of Natural History, 40: 1–370, pls I-XXIII This article incorporates text from this source, which is in the public domain .

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