Abstract The Río Caldera occupies the northernmost subbasin of the Río Chiriqui watershed area. Two of its tributaries, Quebrada Grande and Quebrada Jaramillo, occur in close proximity and on opposite sides, and have different recent geologic histories and current land use patterns. The species richness of adult caddisflies in these drainages is very similar. However, their assemblage composition is quite different. When compared to optimal and minimal lists of genera, mimicking collections of larval stages, the similarity between these two tributaries increases significantly. This study suggests that adult caddisfly identifications at the species level provide higher overall information content, produce better estimates of species diversity, are potentially useful in determining relative similarity of streams and drainages based on assemblage composition, and generate questions which would not be possible employing larval, generic-level identifications. However, multiple samples over time and space employing multiple sample methods are required to provide robust estimates of species diversity.

中文翻译：

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巴拿马的毛翅目 IX。巴拿马西部两个邻近流域的石蛾组合的初步比较

摘要 Río Caldera 位于 Río Chiriqui 流域最北端的子流域。它的两条支流 Quebrada Grande 和 Quebrada Jaramillo 紧邻并位于两侧，具有不同的近期地质历史和当前的土地利用模式。这些排水系统中成年石蛾的物种丰富度非常相似。然而，它们的组合构成却大不相同。与模拟幼虫阶段集合的最佳和最小属列表相比，这两个支流之间的相似性显着增加。这项研究表明，在物种水平上的成年石蛾鉴定提供了更高的整体信息含量，对物种多样性产生更好的估计，可能有助于根据组合成分确定河流和排水系统的相对相似性，并产生使用幼虫、通用级别识别不可能的问题。然而，需要使用多种样本方法在时间和空间上进行多个样本，以提供对物种多样性的可靠估计。