Core Insights - A new species of freshwater snail, Li Si Guang Ya Tian Luo, has been discovered in Guilin, Guangxi, marking a significant addition to the region's biodiversity [1] - This species was thought to be extinct for nearly a century, having been first identified in 1935 and named after the renowned Chinese geologist Li Si Guang [1] Summary by Categories Discovery and Research - The research was published in the international journal "Zoological Journal" and highlights the discovery of a small living population of the snail species in a river near Guilin [1] - Morphological and molecular systematics studies confirmed that the current population matches the fossilized type specimen of Li Si Guang Ya Tian Luo [1] Historical Context - The species was originally discovered and named in 1935, but had not been seen in nature for almost 100 years until its recent rediscovery [1] - The naming of the species honors Li Si Guang, a prominent figure in Chinese geology, linking the species to a significant historical narrative [1] Biodiversity and Environmental Impact - The discovery of the living population of Li Si Guang Ya Tian Luo serves as a direct indicator of the biodiversity of freshwater species in Guangxi [1] - It also reflects the significant achievements in local water environment management, showcasing the positive impact of conservation efforts [1]

论文共同第一作者，中国科学院昆明动物研究所助理研究员张乐嘉介绍，分子系统学和分子钟研究显示，远岸螺属是昆明螺属的姐妹群，在约 1300万年前分化成两个属。此外，昆明螺属具有两个演化分支，其中一支是抚仙湖特有分支，包含了玻璃昆明螺、铁锏昆明螺和流萤昆明螺；而 另一支包含了珍珠昆明螺和滇池特有的昆明螺。 研究表明，远岸螺属和昆明螺属抚仙湖特有分支都是在晚中新世发生了辐射演化，早于先前地质学研究中判断的抚仙湖的形成年代上新世，暗示 了抚仙湖的形成年代可能早于先前估计的时代。 南昌大学和中国科学院昆明动物研究所的合作团队系统研究了云南抚仙湖的盖螺科物种，描述了包含4个抚仙湖特有新种的一个特有新属——远岸 螺属，同时还描述了昆明螺属下4个抚仙湖特有新种。相关研究成果10月1日在线发表在国际动物学期刊《林奈学会动物学杂志》上。 1-8分别是玻璃昆明螺、铁锏昆明螺、流萤昆明螺、珍珠昆明螺、银匙远岸螺、大池远岸螺、冰糯远岸螺、俞元远岸螺。中国科学院昆明动物研究 所供图 论文共同第一作者，南昌大学生命科学学院博士研究生陈辉介绍，基于贝壳形态、胎壳超微雕刻、齿舌结构等研究，此次描述的抚仙湖盖螺科的 新属和新种的有效性得到了形态学 ...