ABSTRACT The composition of a snake assemblage from an orographic island in east-central Argentina, the Sierras de Ventania mountain chain, was analyzed. The aim was to determine the biogeographic resemblance to other snake assemblages from neighboring regions. Species composition of each region was obtained from an exhaustive review of the literature, and both fieldwork and museum records. The higher biogeographic resemblance of the Sierras de Ventania occurred with the Sierras de Tandilia and the Coastal Dunes. These regions formed a well-defined group according to their snake assemblages. On the other hand, the Sierras de Lihué Calel linked to the Sierras de Ventania, and also to the rest of the compared regions, at very low values of biogeographic resemblance. The results obtained in this study contrasted with the classic zoogeographic scheme. Snake assemblages allowed recognizing a more significant division between Central and Pampean domains. In this scheme, the limit between these two regions moved to the southwest of the classical scheme; therefore the Sierras de Ventania was part of the Pampean domain. Also, the recognition of the Subtropical domain was evident, as well as its faunistic link with the Pampean domain.

中文翻译：

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阿根廷中东部 Sierras de Ventania 山脉蛇群的比较组成

摘要分析了来自阿根廷中东部一个地形岛屿，即 Sierras de Ventania 山脉的蛇群的组成。目的是确定与邻近地区其他蛇群的生物地理相似性。每个地区的物种组成是通过对文献、实地考察和博物馆记录的详尽审查获得的。Sierras de Ventania 与 Sierras de Tandilia 和沿海沙丘的生物地理相似度更高。这些区域根据它们的蛇组合形成了一个明确定义的组。另一方面，Sierras de Lihué Calel 与 Sierras de Ventania 以及其他比较区域相关联，生物地理相似度非常低。本研究中获得的结果与经典的动物地理方案形成对比。蛇组合允许识别中央域和潘潘域之间更重要的划分。在这个方案中，这两个区域之间的界限移到了经典方案的西南；因此，Sierras de Ventania 是 Pampean 领地的一部分。此外，对亚热带地区的认识也是显而易见的，以及它与潘佩斯地区的动物学联系。