Three new species of cave-adapted pseudoscorpions (Pseudoscorpiones, Chthoniidae) from eastern Yunnan, China.

Three new cave-adapted chthoniid pseudoscorpions from four karst caves of Yunnan Province (China) are described, including detailed diagnosis and illustrations: Tyrannochthoniuscalvatus sp. nov. from an unnamed cave and Dongtianfu Cave (Fuyuan County), T.capito sp. nov. from Xianren Cave (Xichou County), and Lagynochthoniusdaidaiensis sp. nov. from Daidai Cave (Qiubei County). All three species are endemic to Yunnan. Tyrannochthoniuscalvatus sp. nov. , lacking the carapaceal antero-median setae and having intercalary teeth on the movable chelal finger only, is a peculiar chthoniid species.