Two new species are described in the rare, enigmatic wedge-beetle genus Pterydrias Reitter (Ripidiinae: Eorhipidiini): Pterydrias cattieni Falin and Engel, new species, from Cát Tiên National Park, southern Vietnam; and P. pondolandensis Falin and Engel, new species, from Pondoland, Eastern Cape Province, South Africa. The new species are distinguished from their congeners, and a revised key to the species is presented. Comments are made concerning the diversity and biogeography of Pterydrias and other ripidiines and previous hypotheses as to eorhipidiine hosts, and some notable abdominal structures are highlighted.