Large prosomal scent glands constitute a major synapomorphic character of the arachnid order Opiliones. These glands produce a variety of chemicals very specific to opilionid taxa of different taxonomic levels, and thus represent a model system to investigate the evolutionary traits in exocrine secretion chemistry across a phylogenetically old group of animals. The chemically best‐studied opilionid group is certainly Laniatores, and currently available chemical data allow first hypotheses linking the phylogeny of this group to the evolution of major chemical classes of secretion chemistry. Such hypotheses are essential to decide upon a best‐fitting explanation of the distribution of scent‐gland secretion compounds across extant laniatorean taxa, and hence represent a key toward a well‐founded opilionid chemosystematics.

中文翻译：

---

Opiliones（蜘蛛纲）的化学系统学：对 Laniatores 气味腺分泌物中烷基酚和苯醌的进化史的评论

大型前体气味腺构成了蜘蛛目 Opiliones 的主要同源特征。这些腺体产生多种对不同分类水平的阿片类群非常特异的化学物质，因此代表了一个模型系统，用于研究系统发育古老的动物群体的外分泌分泌化学的进化特征。化学上研究得最好的阿片类药物无疑是Laniatores，目前可用的化学数据允许第一个假设将该类群的系统发育与分泌化学的主要化学类别的进化联系起来。这些假设对于决定对现存毛毛动物类群中气味腺分泌化合物的分布的最合适解释至关重要，因此代表了建立有充分依据的阿匹林类化学系统学的关键。