维基百科 Margarya is a genus of large operculate freshwater snails, aquatic gastropod mollusks in he family Viviparidae. [3] These snails appear to be endemic to lakes in Yunnan Province in the China. Species[edit] There is 6 extant species, 3 fossil species and one recently extinct species of Margarya.[2] Species within the genus Margarya include 10 species:[2] (extant) Margarya bicostata Tchang & Tsi, 1949[4][2] Margarya francheti (Mabille, 1886)[2] (extant) Margarya mansuyi Dautzenberg & Fischer, 1906[5][2] (extant) Margarya melanioides Nevill, 1877 - type species[2] Margarya melanioides dianchiensisi[6] (extant) Margarya monodi Dautzenberg & Fischer, 1905[7][2] (extant) Margarya tropidophora (Mabille, 1886)[6][2] (extant) Margarya yangtsunghaiensis Tschang & Tsi, 1949[8][2] Margarya yini Tchang & Tsi, 1949[2] Species brought into synonymy Margarya elongata Tchang & Tsi, 1949: synonym of Margarya monodi Dautzenberg & H. Fischer, 1905 Margarya tchangsii Xia, 1982: synonym of Margarya monodi Dautzenberg & H. Fischer, 1905