Left male palp of Olios sericeus (Kroneberg, 1875) from Xinjiang Uygur Autonomous Region, China. A prolateral view; B ventral view; C retrolateral view; D embolus, ventral view; E embolus, retrolateral view. Abbreviations: C conductor; E embolus; RTA retrolateral tibial apophysis; Sp spermophor; ST subtegulum; TA tegular apophysis. Scale bars: 0.5 mm (A–C); 0.1 mm (D, E).