Volutidae

Cymbiola magnifica

The auger flights ( Volutidae ) are a diverse family exclusively marine and comparatively very large snails (up to 50 cm). There are about 250 described species.

Features

The shape of the housing varies from almost round with a large opening to hochkonisch with a long, slit-like opening. The adult size is 1.5 cm to about 50 cm. Often three or four folding spindle are provided which can be reduced in the end winding, however. The housings are usually little ornamentation, but with intricate color patterns, but often vary porcelain-like intraspecific strong. The foot is z.T. extremely large. An operculum is absent in most species, but is developed in the three species of the western Atlantic species Voluta. The Raspelzungen are relatively short and have 1 or 3 elements per transverse row. The eggs are attached in large egg capsules on hard substrates. The eggs contain large amounts of protein-rich egg white. The Veligerstadium will therefore pass through the egg membrane and the metamorphosis will take place before hatching. Even the seizure of Nähreier had already been observed in some species.

Way of life

The auger flights are found in all oceans of the world. However, the focus of diversity is clearly in the warmer seas. The vertical distribution shows an emphasis in shallower water, but some species have penetrated down to 4100 m water depth. Auger flights occur almost exclusively on sandy and muddy soft bottoms. They live mostly buried and waiting for prey, mostly from other molluscs, in the main, even other snails there who are overwhelmed with the large and muscular foot. But even carrion ( dead fish, for example ) is assumed.

Some species

The three species of the genus Voluta live in warm Atlantic waters of South America and the Caribbean, namely the Hebrew roller ( Voluta ebraea ) on the coast of Brazil, the central screw or note roll ( Voluta musica ) on the coasts of Colombia, Venezuela, Suriname and the Antilles and voluta virescens on the coast of Costa Rica, Panama and Colombia. Most rolling snail species are native to the Indo-Pacific. There are several species of the genus Melo, including the melon worm live ( Melo melo ) and the diadem - roll snail ( Melo amphora ), which is one of the biggest screw up more than 50 cm Length of case, as well as numerous types of Cymbiola, among others, the bat roller ( Cymbiola vespertilio ) and the Australian way Cymbiola magnifica.

System

The family can be further subdivided according to Bail & Poppe (2001):

  • Subfamily Athletinae Pilsbry & Olsson, 1954 Genus Athleta Conrad, 1853
  • Tribus Volutini Rafinesque, 1815 Genus Voluta Linnaeus, 1758
  • Genus Calli Para Gray, 1847
  • Genus Harpulina Dall, 1906
  • Genus Lyria Gray, 1847
  • Genus Enaeta H. & A. Adams, 1853
  • Genus Leptoscapha Fischer, 1883
  • Genus Fusivoluta E. von Martens, 1902
  • Genus Calliotectum Dall, 1890
  • Genus Neptuneopsis Sowerby III, 1898
  • Genus ampulla Röding, 1798
  • Genus Scaphella Swainson, 1832
  • Genus Volutifusus Conrad, 1863
  • Genus Fulgoraria Schumacher, 1817
  • Genus Tenebrincola Harasewych & Kantor, 1991
  • Tribus Adelomelonini Pilsbry & Olsson, 1954 Genus Adelomelon Dall, 1906
  • Genus Nanomelon Leal & Bouchet, 1989
  • Genus Arctomelon Dall, 1915
  • Genus Odontocymbiola Clench & Turner, 1964
  • Genus Minicymbiola flaps Bach, 1979
  • Genus Miomelon Dall, 1907
  • Genus Tractolira Dall, 1896
  • Genus Zidona H. & A. Adams, 1853
  • Genus Provocator Watson, 1882
  • Genus Harpovoluta Thiele, 1912
  • Genus cymbium Röding, 1798
  • Genus Ericusa H. & A. Adams, 1858
  • Genus Livonia Gray, 1855
  • Genus Notopeplum Finlay, 1927
  • Genus Alcithoe H. & A. Adams, 1853
  • Genus Zygomelon Harasewych & Marshall, 1995
  • Tribus Amoriini Gray, 1857 Genus Amoria Gray, 1855
  • Genus Paramoria McMichael, 1960
  • Genus Nannamoria Iredale, 1929
  • Genus Notovoluta Cotton, 1946
  • Genus Volutoconus Crosse, 1871
  • Genus Cymbiola Swainson, 1831
  • Genus Melo Broderip in Sowerby I, 1826
  • Genus Plicoliva Petuch, 1979

Bouchet & Rocroi (2005 ) present a slightly different system, and divide the Volutiden into the following eight subfamilies:

  • Volutinae Rafinesque, 1815
  • Amorinae Gray, 1857
  • Athletinae Pilsbry & Olsson, 1954
  • Calliotectinae Pilsbry & Olsson, 1954
  • Fulgorariinae Pilsbry & Olsson, 1954
  • Plicolivinae Bouchet, 1990
  • Priamidae Sismonda, 1842
  • Yetiinae Gray, 1847
Caenogastropoda Sorbeoconcha Neogastropoda Operculum (gastropod) Melo (gastropod) TGV Lyria Livonia (disambiguation)
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