The recently described genus Paragalago is a complex of several nocturnal and morphologically cryptic species distributed in the forests of eastern Africa. Species diversity within this genus has been mainly described using species-specific differences in their loud calls. However, molecular data are still lacking for this group and species boundaries remain unclear. In this study, we explore species diversity within the zanzibaricus-complex using a combination of mitochondrial and nuclear data and comparing multiple species delimitation methods. Our results consistently support the existence of three independent lineages, P. cocos, P. zanzibaricus, and P. granti, confirming previous hypotheses based on vocal data. We conclude that these three lineages represent valid cryptic species and we hypothesize that speciation within this complex was characterized by cycles of forest expansion and contraction in the Plio-Pleistocene.

最近描述的巴拉加拉戈属（Paragalago）是分布在东部非洲森林中的几种夜行性和形态学隐秘物种的复合体。该属中的物种多样性主要是通过大声呼叫中特定物种的差异来描述的。但是，仍然缺少该组的分子数据，种类边界仍然不清楚。在这项研究中，我们结合线粒体和核数据，并比较了多种物种定界方法，探索了桑给巴尔-复杂群内的物种多样性。我们的结果始终支持存在三个独立的世系P. cocos，P. zanzibaricus和P. Granti，根据语音数据确认先前的假设。我们得出的结论是，这三个世系代表有效的神秘物种，并且我们假设这种复合物中的物种形成以上新世的森林扩张和收缩周期为特征。