The first in‐depth revision of a lacustrine freshwater mollusc fauna of the Serbian Lake System (SLS) is carried out. We describe and discuss well‐preserved faunas from two localities in central and southern Serbia (Mađere and Medoševac), along with the reinvestigation of type material of several species described in the late nineteenth and early twentieth centuries. Our revision yields 14 species of gastropods, with the families Hydrobiidae (six species) and Planorbidae (four species) being most abundant, along with one species each of Neritidae, Melanopsidae, Bithyniidae and Bulinidae, as well as two dreissenid bivalve species. Three of the hydrobiid gastropods are new to science, Prososthenia milosevici sp. nov., Prososthenia? naissensis sp. nov., and Prososthenia rundici sp. nov., and so is the bivalve Trigonipraxis madjerensis sp. nov. The present study results in 12 lectotype designations, 10 new generic combinations, and 10 new junior synonyms. About four‐fifths (81.3%) of the species are endemic to the SLS, which is slightly higher than the overall SLS endemism (71.4%). The composition at the genus and family level overlaps strongly with the slightly older faunas of the Dinaride Lake System in Croatia and Bosnia and Herzegovina, as well as that of the late Miocene Lake Pannon. Its stratigraphically intermediate position and geographical proximity suggest that the SLS was a stepping stone for many of the mollusc lineages, some of which are found only in those systems.

中文翻译：

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塞尔维亚湖系统：中新世中期淡水软体动物的垫脚石

塞尔维亚湖系统（SLS）的湖泊淡水软体动物区系进行了首次深度修订。我们描述和讨论来自塞尔维亚中部和南部两个地方（Mađere和Medoševac）保存完好的动物区系，并对十九世纪末至二十世纪初描述的几种物种的文字材料进行了重新调查。我们的修订产生了14种腹足动物，其中双翅目（Hydrobiidae）（6种）和Planorbidae（4种）最为丰富，同时还有Neritidae，Melanopsidae，Bithyniidae和Bulinidae的一种，以及两种蝶形双壳类。三种亲水双足类腹足动物是科学新手，Prososthenia milosevici sp。十一月，假肢？naissensis SP。十一月Prososthenia rundici SP。11月，双壳类Trigonipraxis madjerensis sp。十一月 本研究的结果是12个选型表指定，10个新的通用组合和10个新的初级同义词。大约五分之四（81.3％）的物种是SLS特有的，略高于整体SLS的特有性（71.4％）。属和科的组成与克罗地亚和波斯尼亚和黑塞哥维那的迪纳里德湖系统以及较晚的中新世潘农湖稍早一些的动物区系强烈重叠。它的地层中间位置和地理位置相近，表明SLS是许多软体动物世系的垫脚石，其中一些仅在那些系统中才发现。