乳顶螺蛳，软体动物门-腹足纲-中腹足目-田螺科。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 synonymyMargarya elongata Tchang & Tsi, 1949: synonym of Margarya monodi Dautzenberg & H. Fischer, 1905Margarya tchangsii Xia, 1982: synonym of Marg