The fauna and flora of the Brazilian Atlantic Forest have been intensively inventoried since the 19th century, but some components of this rich biota are still poorly known, and some areas have been poorly sampled. Recent studies on a rich collection of mountain catfishes of the genus Cambeva have revealed a high diversity of species still undescribed in the region. Here we provide formal descriptions for two of these species, found in areas inserted in a broad gap of the presently known genus distribution. The first one is endemic to small coastal river basins of Santa Catarina state, southern Brazil; it is tentatively placed in an intrageneric clade, also including C. castroi, C. davisi, C. guareiensis and C. zonata, by all sharing the presence of a flat small process on the dorsal margin of the quadrate, laterally overlapping metapterygoid and situated just posterior to the syncondrial joint between the metapterygoid and the quadrate. Phylogenetic relationships of the second new species, endemic to the Rio Itajaí-Mirim basin, are still obscure, but it shares a derived morphology of the mesethmoid with some species of the C. balios group. Although species of Cambeva have little external morphological variation when compared to other trichomycterine groups, the present study once more shows the importance of recording and using osteological characters to diagnose externally similar trichomycterine species.

中文翻译：

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填补分布空缺：巴西南部大西洋森林（il形目，Trichomycteridae）的Cam鱼属Cambeva属的两个新种

自19世纪以来，对巴西大西洋森林的动植物群进行了大量盘点，但该丰富生物群的某些组成部分仍知之甚少，而某些地区的采样也很差。最近对Cambeva属山mountain鱼的丰富收集进行的研究表明，该地区仍存在尚未描述的物种高度多样性。在这里，我们提供了对这两个物种的正式描述，这些描述存在于目前已知属分布的巨大空白中。第一个是巴西南部圣卡塔琳娜州的小型沿海流域特有的；暂时将其放置在一个内生进化枝中，也包括C. castroi，C。davisi，C。guareiensis和C. zonata，它们都共享在方形的背缘上存在一个扁平的小突起，侧向重叠的meta骨，位于and骨与四边形之间的合体关节的后方。第二种新物种的系统发育关系仍然不清楚，但它与巴氏梭菌中的某些物种具有相同的后代形态。尽管与其他毛癣菌素组相比，Cambeva的物种几乎没有外部形态变化，但本研究再次表明了记录和利用骨学特征来诊断外部相似的毛癣菌菌素物种的重要性。但它与C. balios组的某些物种具有相同的衍生特征。尽管与其他毛癣菌素组相比，Cambeva的物种几乎没有外部形态变化，但本研究再次表明了记录和利用骨学特征来诊断外部相似的毛癣菌菌素物种的重要性。但它与巴氏梭菌的某些物种具有相同的衍生特征。尽管与其他毛癣菌素组相比，Cambeva的物种几乎没有外部形态变化，但本研究再次表明了记录和利用骨学特征来诊断外部相似的毛癣菌菌素物种的重要性。