Chinoperla, Zwick, 1980

Mo, Rao-Rao, Liu, Rui-Jun, Wang, Guo-Quan, Li, Wei-Hai & Murányi, Dávid, 2021, Review of the genus Chinoperla Zwick, 1980 (Plecoptera: Perlidae: Perlinae) from China, European Journal of Taxonomy 775, pp. 62-85 : 82

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.

Figures

Fig. 15. A. Wings of Chinoperla nigroflavata (Wu, 1948), drawing modified from Wu (1948). B. Median sclerite of tergum 9 of C. biprojecta Lü, Yan, Li & Wang, 2019, dorsal view, illustration from Lü et al. (2019a). C. Aedeagus ofC. mengmanensis Qian & Du, 2012, lateral view, drawing modified from Qian & Du (2012). Not to scale.

Fig. 8. Chinoperla nigrifrons (Banks, 1939). A–B. ♂, holotype of C. furcomacula (Wu, 1973) (IZCAS). A. Cleared terminalia, dorsal view. B. Cleared terminalia, lateral view. — C. ♂ from Mount Yinggeling (HIST), forewing. Abbreviations: see Material and methods. Scale bars = 0.5 mm.

Fig. 1. Chinoperla changjiangensis sp. nov., ♂, paratype (HIST). A. Head and pronotum, dorsal view. B. Terminalia, dorsal view. C. Cleared terminalia, dorsal view. D. Cleared terminalia, lateral view. Abbreviations: see Material and methods. Scale bars = 0.5 mm.

Fig. 11. Chinoperla gorohovi Sivec & Stark, 2010, ♂ (CAU). A. Head and pronotum, dorsal view. B. Terminalia, dorsal view. C. Cleared terminalia, dorsal view. D. Cleared terminalia, oblique lateral view. Abbreviations: see Material and methods. Scale bars = 0.5 mm.

Fig. 7. Chinoperla nigrifrons (Banks, 1939), ♂, holotype (MCZ Type 22693). A. Aedeagus, dorsal view. B. Aedeagus, lateral view. C. Aedeagal sac, ventral view. D. Apex of aedeagal sac, oblique ventral view. Abbreviations: see Material and methods. Scale bars = 0.25 mm.

Fig. 10. Chinoperla nigrifrons (Banks, 1939), ♂ from Mount Yinggeling (HIST). A. Aedeagus, lateral view. B. Aedeagus, dorsal view. C. Aedeagus, ventral view. Abbreviations: see Material and methods. Scale bars = 0.25 mm.