SEM micrographs of Otacilia yusishanica sp. nov., palp of male holotype. A ventral view B same, detail of embolus, distal tegular apophysis and retrolateral tegular apophysis C retro-dorsal view D same, detail of embolus, embolic groove and retrolateral tegular apophysis. Scale bars: 0.1 mm (A, C), 20 µm (B), 10 µm (D). Abbreviations: dTA – distal tegular apophysis, E – embolus, Gr – groove, RTA – retrolateral tibial apophysis, rTA – retrolateral tegular apophysis.