Key to species of the genus Riseveinus (males)

1. Head elongate, longer than length of pronotum and scutellum together....................... Riseveinus albiveinus (Li)

- Head about as long as or shorter than pronotum and scutellum together........................................... 2

2. Aedeagus with unpaired ventral process.................................................................... 3

- Aedeagus with pair of ventral processes.................................................................... 4

3. Dorsal apodeme of aedeagus bearing bilobed, lamellate process and asymmetrically curved ventral process longer than shaft................................................................ Riseveinus asymmetricus Zhang, Zhang & Wei

- Dorsal apodeme of aedeagus bearing pair of acerose processes and slender, curved ventral process shorter than shaft.................................................................................. Riseveinus baoshanensis sp. nov.

4. Aedeagal shaft swollen at base, with pair of slender apical processes.......... Riseveinus compsessus Zhang, Zhang & Wei

- Aedeagal shaft not swollen at base, without apical processes.............................. Riseveinus sinensis (Jacobi)