Key to species of Chinoperla (males) known from China

1. Forewing has a long Sc vein (Fig. 15A) .................................................. C. nigroflavata (Wu, 1948)

– Forewing has a short Sc vein (Fig. 8C) ............................................................................................ 2

2. Median sclerite of tergum 9 is weakly sclerotized or wider basally than apically ........................... 3

– Median sclerite of tergum 9 is well sclerotized, wider apically than basally (Fig. 1C) ................... 4

3. Median sclerite of tergum 9 is an inverted triangle bearing two finger shaped posterolateral projections (Fig. 15B) ............................................................................ C. biprojecta Lü, Yan, Li & Wang, 2019

– Median sclerite of tergum 9 is nail-shaped, terminating in an expanded apex (Fig. 11B–D) ............ ......................................................................................................... C. gorohovi Sivec & Stark, 2010

4. Aedeagus apically has a large lobe, and pair of spiny lobes without numerous apical spines (Fig. 15C) .................................................................................. C. mengmanensis Qian & Du, 2012

– Aedeagus has less than three apical lobes and numerous large apical spines .................................. 5

5. Aedeagus lacks apical comb-shaped sclerite (Figs 7, 10) ..................... C. nigrifrons (Banks, 1939)

– Aedeagus has an apical comb-shaped sclerite ........................................ C. changjiangensis sp. nov.