EN
Four new species of oonopid spiders are described from southwest China. Two of these are placed in the new genus Trilacuna gen. nov.: T. angularis sp. nov. and T. rastrum sp. nov. (type species). Trilacuna gen. nov. is characterized by the enlarged male palpal femur, the complicated embolus-conductor complex, the branched male endites and the notched labium. A further two species are Camptoscaphiella tuberans sp. nov. and Gamasomorpha barbifera sp. nov. A key to 10 genera and 23 species of the currently known Chinese oonopid spiders is given.