At three alpine locations in Switzerland adults of Drusus melanchaetes and unknown Drusinae larvae which could not be identified with existing keys were sampled. Based on DNA association with adults, we identified the unknown larvae as D. melanchaetes. To further support the association of specimens a phylogeny was estimated with the putative closest relatives of D. melanchaetes - D. monticola and D. nigrescens - and five other species of Drusus (D. chrysotus, destitutus, discolor, muelleri and romanicus). A highly supported monophyletic clade groups unknown larvae and D. melanchaetes specimens from the central Alps and Austria (Vorarlberg), confirming the association. Based on morphology, larvae of Drusus melanchaetes key out together with D. destitutus in existing keys. D. melanchaetes is separated from the latter species by the shape of the lateral head profile which is almost straight and shows a small step at the height of the antenna, whereas in D. destitutus the lateral head profile is evenly rounded. In addition, in frontal view, the shape of the lateral head outline is straight in D. melanchaetes and rounded in D. destititus. There are also differences in the shape of the pronotum and in the number of the posterodorsal setae at the eighth abdominal dorsum.

中文翻译：

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1876 年，Drusus melanchaetes McLachlan 幼虫阶段的 DNA 关联和描述（毛翅目：Limnephilidae：Drusinae），附有生态学和动物地理学注释

在瑞士的三个高山地点，对无法用现有钥匙识别的黑斑病成虫和未知的黑斑病幼虫进行了采样。基于与成虫的 DNA 关联，我们将未知的幼虫鉴定为 D. melanchaetes。为了进一步支持标本的关联，系统发育估计与 D. melanchaetes 的假定近亲 - D. monticola 和 D. nigrescens - 以及其他五种 Drusus （D. chrysotus、destitutus、discolor、muelleri 和 romanicus）。一个高度支持的单系进化枝将来自中部阿尔卑斯山和奥地利（福拉尔贝格）的未知幼虫和 D. melanchaetes 标本分组，证实了这种关联。根据形态学，Drusus melanchaetes 的幼虫与 D. destitutus 一起在现有的键中键出。D. melanchaetes 与后者的区别在于侧面头部轮廓的形状几乎是笔直的，并且在触角的高度处显示出一个小台阶，而在 D. destitutus 中，侧面头部轮廓是均匀圆形的。此外，在正面视图中，D. melanchaetes 的侧面头部轮廓的形状是直的，而 D. destititus 的侧面头部轮廓的形状是圆形的。前背板的形状和第8腹背后背刚毛的数量也有差异。