Abstract
Four new species of Yunguirius B. Li, Zhao & S.Q. Li, 2023 are described from China, namely: Yunguirius parvus Wei & Liu, sp. nov. (♀), Yunguirius trigonus Wei & Liu, sp. nov. (♀), Yunguirius wangqiqiae Wei & Liu, sp. nov. (♀), and Yunguirius xiannushanensis Wei & Liu, sp. nov. (♀).