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

Two new cave-adapted pseudoscorpion species belonging to the family Chthoniidae are described: Tyrannochthoniuspandus sp. nov. from Biyu Cave (Yunnan: Luxi) and Lagynochthoniuslaoxueyanensis sp. nov. from Laoxueyan Cave (Yunnan: Yanshan). Both of them, collected from the dark zone of caves, are highly troglomorphic species.