This paper deals with four genera and eight species of the subfamily Dataminae Rehn & Rehn, 1939 from China. One new genus and four new species, Hainanphasma cristata Ho gen. nov. spec. nov., H. diaoluoshanensis Ho spec. nov., Pylaemenespui Ho spec. nov. and Pylaemenes shirakii Ho & Brock spec. nov., are described and illustrated. A new combination is proposed: Planispectrum hainanensis (Chen &...