Table 1 Characteristics of all examined species based on external morphology of voucher specimens.
Species | S. mutilans | S. multidens | S. mojiangica | S. negrocapitis | S. dehaani | S. subspinipes | S. hainanum | S. lufengia |
|---|---|---|---|---|---|---|---|---|
Size | Small | Big | Small | Small | Big | Big | Big | Small |
Color | D: Cephalic plate and the first tergite fresh red; other tergites dark green | D: Cephalic plate and the first tergites deep red; other tergites brown | M: Blackish green | M: Dark blue | D: Cephalic plate and the first tergite reddish brown; tergites entirely brown. M: Yellowish brown to reddish brown | M: Yellowish brown to dark brown | M: Yellowish brown to dark brown | M: Deep green |
Antennal articles | 17 – 18 | 18 | 18 | 18 | 18 | 18 – 19 | 17 – 19 | 18 |
Teeth | 5+5 | 6+6 | 4+4 or 5+5 | 5+5 | 6+6 | 5+5 or 6+6 | 6+6 or 7+7 | 4+4 |
Spines on coxopleural process | 2 | 3 | 2 | 2 – 3 | 2 | 1 – 3 | 1 – 2 | 2 |
Spines on ultimate legs prefemur | 2 VL, 1 VM, 1 DM and 2 corner | 2 VL, 2 VM, 2 DM and 3 corner | 2 – 3 VL, 2 VM, 2 DM and 3 corner | 3 VL, 2 VM, 2 – 3 DM and 2 corner | 0 VL, 1 VM, 1DM and 3 corner | 2 – 3 VL, 1 – 2 VM, 1 – 3 DM and 2 – 3 corner | 1VL, 1 VM, 2 DM and 2 corner | 1 VL, 2 VM, 2 DM and 3 corner |
Tarsal spur on legs | 1 – 20 | 1 – 19 | 1 – 19 | 1 – 19 | 1 – 20 | 1 – 20 | 1 – 19 | 1 – 19 |
Male gonopods | Present | Absent | Present | Present | Present | Present | Absent | Present |
Distribution | Yangzi river system | Zhujiang river system, Sanjiang river (Yunnan) system, Hainan, Taiwan | Yuanjiang river (Yunnan) system | Yangzi river system | Zhujiang river system, Sanjiang river (Yunnan) system, Hainan | Zhujiang river system, Sanjiang river (Yunnan) system, Hainan, Taiwan | Hainan, Guangxi | Lufeng (Yunnan) |
