Eleven new species and new records of the Tachinus nepalensis Ullrich group of the subgenus Tachinoderus Motschulsky from China, Vietnam and Laos (Coleoptera: Staphylinidae: Tachyporinae).

Eleven new species of the Tachinus nepalensis Ullrich group of the subgenus Tachinoderus Motschulsky are described from China, Vietnam and Laos: T. asperius Chang, Li Yin, sp. nov. (Yunnan), T. biangulatus Chang, Li, Yin Schülke, sp. nov. (Shaanxi, Sichuan), T. bimorphus Chang, Li, Yin Schülke, sp. nov. (Yunnan, Xizang), T. breviculus Chang, Li, Yin Schülke, sp. nov. (Sichuan, Yunnan), T. chengzhifeii Chang, Li, Yin Schülke, sp. nov. (Shaanxi, Zhejiang, Hubei, Fujian, Guangxi, Chongqing, Sichuan, Yunnan, Vietnam: Sa Pa), T. granosus Chang, Li, Yin Schülke, sp. nov. (Shaanxi, Gansu, Sichuan), T. maculosus Chang, Li, Yin Schülke, sp. nov. (Yunnan), T. meniscus Chang, Li, Yin Schülke, sp. nov. (Hunan, Guangdong, Guangxi, Yunnan), T. qian Chang, Li Yin, sp. nov. (Guizhou), T. songxiaobini Chang, Li Yin, sp. nov. (Yunnan), and T. yunnanensis Chang, Li, Yin Schülke, sp. nov. (Yunnan; Laos: Phongsaly). Main characters distinguishing species are the shapes of the terminal tergites and sternites of both sexes, and morphological differences in the aedeagi. New collecting data for eight known species: T. beckeri Ullrich, T. grandicollis (Bernhauer), T. laosensis Katayama Li, T. naomii Li, T. nigriceps Sharp, T. pseudobirmanus Schülke, T. sugayai Schülke and T. yushanensis Campbell are given. Tachinus laosensis Katayama Li is recorded from China for the first time. An identification key to and distributional maps of the Chinese species of the T. nepalensis group are provided.