Three species in the genus Stactobia are previously known from China, Stactobia salmakis Malicky & Chantaramongkol, 2007, from Zhejiang, S. parva Wells & Dudgeon, 1990, from Hong Kong, and S. semele Malicky & Chantaramongkol, 2007, from Taiwan. Examination of materials collected from Jiangxi and Sichuan Provinces in the southern part of China has revealed 4 new species of Stactobia, bringing the number of Chinese Stactobia species to 7. Newly described species include S. forcipata, new species, S. rhombica, new species, S. leptoclada new species, and S. spicifera, new species. Previously described species S. salmakis and S. semele, along with all the new species belong to the Stactobia martynovi diagnostic species group; S. parva belongs to the Stactobia nielseni diagnostic species group. The diagnostic characters for the new species and for these two species groups are summarized.