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Two new pseudoscorpion species of Bisetocreagris Ćurčić, 1983, B. guangshanensis sp. nov. and B. gracilenta sp. nov., belonging to the family Neobisiidae, are described based on specimens collected in karst caves in Guizhou Province, China. Detailed diagnosis, descriptions, and illustrations are presented.

Two new pseudoscorpion species, Pseudotyrannochthonius cheni sp. n. and Allochthonius (A.) fanjingshan sp. n. (family Pseudotyrannochthoniidae Beier, 1932) are described and illustrated. P. cheni sp. n. represents the first record of this genus from China and is also the first epigean (surface) species to be recorded from eastern Asia because all other species (from Korea and Japan) occur in subterranean habitats. A. (A.) fanjingshan sp. n. is the eighth species in this genus from China and reflects a wider distribution of the genus in this country. Detailed diagnosis, descriptions and illustrations are presented together with distribution maps and some habitat information.

Two new troglomorphic pseudoscorpion species, Tyrannochthonius harveyi, sp. nov. and Tyrannochthonius zhai, sp. nov., are described from the dark zone of caves in the tower karst of the Guizhou Province in China. Both species are presently known only from single caves and are likely to have very restricted distribution ranges.

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