Anisus Explained

Anisus is a genus of small air-breathing freshwater snails, aquatic pulmonate gastropod mollusks in the subfamily Planorbinae of the family Planorbidae, the ramshorn snails and their allies.^[1]

Species

The genus contains the following species:

Subgenus Anisus

• Anisus calculiformis (Sandberger, 1874)
• † Anisus komarovae Prysjazhnjuk, 1974
• † Anisus krambergeri (Halaváts, 1903)
• † Anisus laskarevi Milošević, 1976
• Anisus leucostoma (Millet, 1813)
• † Anisus septemgyratiformis (Gottschick, 1911)
• Anisus septemgyratus (Rossmässler, 1835)
• Anisus spirorbis (Linnaeus, 1758) - the type species of the genus^[2]
• Anisus strauchianus (Clessin, 1884)^[2]

Subgenus Anisus (Costorbis) Lindholm, 1926

• † Anisus densecostatus Schütt, 1994

Subgenus Disculifer C. Boettger 1944

• † Anisus omalus (Bourguignat, 1881)
• Anisus vorticulus^[2]

Subgenus ?

• † Anisus angulatus (Clessin, 1877)
• † Anisus balizacensis (Peyrot, 1932)
• † Anisus brunnensis (Sauerzopf, 1953)
• † Anisus confusus Soós, 1934
• † Anisus depressissimus (Sacco, 1886)
• † Anisus dupuyianus (Noulet, 1854)
• † Anisus falsani (Locard, 1883)
• † Anisus guerichi (Andreae, 1902)
• † Anisus hilgendorfi (Fraas, 1868)
• Anisus issykulensis (Clessin, 1907)
• † Anisus mariae (Michaud, 1862)
• † Anisus matheroni (Fischer & Tournouër, 1873)
• † Anisus metochiensis Milošević, 1976
• Anisus natalensis (Krauss)^[3]
• † Anisus rousianus (Noulet, 1854)
• Anisus vortex (Linnaeus, 1758)^[2]

Subspecies and species brought into synonymy:

• Subgenus Anisus (Gyraulus) Agassiz in Charpentier, 1837: synonym of Gyraulus Charpentier, 1837
• Anisus (Gyraulus) terekholicus Prozorova & Starobogato, 1997: synonym of Gyraulus terekholicus (Prozorova & Starobogatov, 1997)
• Subgenus † Anisus (Odontogyrorbis) Lörenthey, 1906: synonym of Anisus (Anisus) Studer, 1820
• Subgenus Anisus (Spiralina) Martens, 1899: synonym of Anisus Studer, 1820
• † Anisus angustigyratus (Sauerzopf, 1953): synonym of † Anisus (Anisus) krambergeri (Halaváts, 1903)
• † Anisus dupuyanus (Noulet, 1854): synonym of † Anisus dupuyianus (Noulet, 1854)
• Anisus septemgyratus auct. (not Rossmässler):^[2] synonym of Anisus calculiformis (Sandberger, 1874)
• Anisus tokyoensis Mori, 1938: synonym of Gyraulus tokyoensis (Mori, 1938)

Notes and References

1. Rosenberg, G.; Bouchet, P. (2014). Anisus. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=716342 on 2014-11-23
2. Glöer, P. 2002 Die Süßwassergastropoden Nord- und Mitteleuropas. Die Tierwelt Deutschlands, ConchBooks, Hackenheim, 326 pp.,, page 254-263.
3. Oberholzer G. & Van Eeden J. A. (1967). "The freshwater molluscs of the Kruger National Park". Koedoe - African Protected Area Conservation and Science 10(1): 1-42., PDF . Fig. 21.