Figure 7.A–D Tetraserica wandingensis sp. n. (holotype) E–H Tetraserica tonkinensis (Moser) comb. n. (lectotype) I–L Tetraserica xichouensis sp. n. (holotype). A, E, I aedeagus, left side lateral view C, G, K aedeagus, right side lateral view; B, F, J parameres, dorsal view D, H, L habitus (not to scale). Scale: 0.5 mm.