Spinirta sishuishan Liu sp. nov., palp of male holotype A prolateral view B ventral view C retro-ventral view D dorsal view E detail of VTA and RTA, ventral view F same, ventral view, slightly retrolateral G detail of tegulum, ventral view H same, retro-ventral view. Abbreviations: CS – cone-shaped spines, E – embolus, EA – embolic apophysis, PTA – prolateral tibial apophysis, RTA – retrolateral tibial apophysis, St – subtegulum, VTA – ventral tibial apophysis. Scale bars: 0.1 mm.