The Qinghai‐Tibetan Plateau and Himalayas (QTPH) are biodiversity hotspots crucial for understanding alpine speciation. While studies have focused on flora and aboveground fauna, the impact of QTPH uplift on soil fauna diversification remains understudied. To address this research gap, we investigated a representative taxon of alpine soil animals, the Isotoma quadridentata species complex (Collembola, Isotomidae) widespread at...