Frustulia tunariensis sp. nov. is originated from a high-altitude peatland in the Tunari Cordillera, a branch of the Andean range in Bolivia. The new taxon is distinguished by the thick longitudinal ribs, the globose polar nodule with faint helictoglossa that does not produce an apical extension, and by the high areola and stria density, not found in any of the morphologically closely related taxa. Features of the folded valvocopula, such as the presence of a siliceous membrane as pars interior, and poroids present in the tube-like portion opening as slits to the valve interior and as a single row of poroids to the exterior, are also unique characters in the new taxon. Based on a literature review, a comparison of the newly proposed species with morphologically similar taxa was made. Also, published information shows the potential of girdle bands to distinguish groups of species and species themselves within Frustulia. Likewise, remarks on the ecological and distribution aspects of Frustulia in the Bolivian Altiplano are included, focusing on taxonomic quality, geographic coverage and sampling, and potential to represent the genus in the high Bolivian Andean plateau.

中文翻译：

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扁叶锥虫 十一月 （Bacillariophyceae）来自南美玻利维亚的安第斯山脉

扁叶紫锥sp。十一月 源自玻利维亚安第斯山脉分支下的Tunari Cordillera高海拔泥炭地。新的分类单元的特征是粗大的纵向肋骨，球形的根瘤和不产生根尖延伸的淡淡的螺旋状光泽，以及较高的乳晕和纹状体密度，在任何形态上密切相关的分类单元中都找不到。折叠瓣膜的特征，例如在内部存在硅质膜，并且在管状部分中存在的脉络膜开口是通向瓣膜内部的缝隙，而通向外部的是单行的脉络膜，也是在这种情况下的独特特征。新的分类单元。根据文献综述，对新提出的物种与形态相似的类群进行了比较。也，视锥虫。同样，还包括有关玻利维亚高原中视锥虫的生态和分布方面的评论，重点是生物分类质量，地理覆盖范围和采样，以及代表高玻利维亚安第斯高原地区属的潜力。