Sinacroneuria, Yang & Yang, 1995

Xiang, Ya-Nan, Huo, Qing-Bo & Du, Yu-Zhou, 2022, Three new species of Sinacroneuria Yang & Yang, 1995 (Plecoptera: Perlidae) from Zhejiang Province, southeastern China, Zootaxa 5175 (4), pp. 487-493 : 492

Key to Sinacroneuria males from Zhejiang Province

1. Head without dark spot in ocellar triangle.................................................................. 2

-. Head with dark spot in ocellar triangle..................................................................... 3

2. Paraproct form blunt uncinate process; aedeagus not described ( Wu 1938)........................... S. quadriplagiata

-. Paraproct recurved upward to be pointed process ( Fig. 1b )........................................... S. parallela

3. Sensilla basiconica patch of tergum 10 mostly fused ( Fig. 2d )......................................... S. complana

-. Sensilla basiconica patch of tergum 10 separated............................................................ 4

4. Sensilla basiconica patch of tergum 9 separated ( Fig. 3 in Yang & Yang, 1995)........................... S. orientalis

-. Sensilla basiconica patch of tergum 9 mostly fused.......................................................... 5

5. Aedeagal Y-arms almost straight......................................................................... 6

-. Aedeagal Y-arms curved............................................................................... 7

6. Apex of aedeagal Y-arms closed to each other (Fig. 4 in Yang and Yang 1998)................................. S. yiui

-. Apex of aedeagal Y-arms separate from each other (Fig. 12 in Yang & Yang, 1998)........................... S. sinica

7. Lateral sclerites of aedeagal middle part folded inward (Fig. 16 in Yang and Yang 1998)......................... S. wui

-. Lateral sclerites of aedeagal without folded................................................................ 8

8. Y-arms extended into S-shape and apex closed ( Fig. 3d ).......................................... S. longiprojecta

-. Y-arms curved outside, closed in the middle and apex separated (Fig. 8 in Yang and Yang 1998)........ S. longwangshana

Figures

FIGURE 1. Sinacroneuria parallela sp. nov., male. a. head and pronotum, dorsal view; b. abdominal terminalia, dorsal view; c. abdominal terminalia, ventral view; d. aedeagus sclerites, dorsal view; e. median aedeagal sclerite, lateral view.

FIGURE 2. Sinacroneuria complana sp. nov., male. a. head and pronotum, dorsal view; b. abdominal terminalia, dorsal view; c. abdominal terminalia, ventral view; d. abdominal terga 9–10, details; e. aedeagal sclerites, dorsal view.

FIGURE 3. Sinacroneuria longiprojecta sp. nov., male. a. head and pronotum, dorsal view; b. abdominal terminalia, dorsal view; c. abdominal terminalia, ventral view; d. aedeagus sclerites, dorsal view.