Pachychilidae
Pachychilidae, common name pachychilids, is a taxonomic family of freshwater snails, gastropod molluscs in the clade Sorbeoconcha.
Distribution
Pachychilids are freshwater snails with a worldwide distribution in the tropics. Representatives are found in South and Central America, Africa, Madagascar, South and South-east Asia and tropical Australia.Description
Pachychilids have an operculum, which is concentric and multispiral.Ecology
All species in the family inhabit freshwater except Faunus ater, which is a brackish water snail found in estuaries and other coastal habitats. Pachychilids are either oviparous, ovoviviparous or viviparous.Genera
Genera within the family Pachychilidae include:- † Bellatara Strand, 1928 - with only one species Bellatara janus Brotia H. Adams, 1866 Doryssa Swainson, 1840
- † Eginea Pacaud & Harzhauser, 2012Faunus de Montfort, 1810 with the only species Faunus ater Jagora Köhler & Glaubrecht, 2003
- † Jponsia Pacaud & Harzhauser, 2012Madagasikara Köhler & Glaubrecht, 2010 - synonym: Melanatria Bowdich, 1822 auctt.
- † Nodifaunus Olsson, 1944Pachychilus I. Lea & H. C. Lea, 1851 - type genus of the family PachychilidaeParacrostoma Cossmann, 1900 Potadoma Swainson, 1840
- † Pseudobellardia Cox, 1931Pseudopotamis Martens, 1894Sulcospira Troschel, 1858 - synonym: Adamietta Brandt, 1974
- † Tinnyea Hantken, 1887Tylomelania Sarasin & Sarasin, 1897
- † Wingeastonia K. Martin, 1906
- Fauninae Cossmann, 1909 : synonym of Pachychilidae P. Fischer & Crosse, 1892Melanatria Bowdich, 1822: synonym of Faunus Montfort, 1810Oxymelania Crosse & P. Fischer, 1892: synonym of Pachychilus I. Lea & H. C. Lea, 1851Pirena Lamarck, 1822: synonym of Faunus Montfort, 1810Sphaeromelania Rovereto, 1899: synonym of Pachychilus I. Lea & H. C. Lea, 1851Wanga Chen, 1943: synonym of Brotia H. Adams, 1866