Key to Chinese Trachelas species

1. Male .............................................................................................................................................................................. 2

- Female........................................................................................................................................................................... 5

2. Embolus short, with pointed tip; patella without apophysis (Fig. 7) ........................................................... T. acuminus

- Embolus relatively long, tip blunt; patella with apophysis........................................................................................... 3

3. Carapace without granulations (Fig. 11); embolus longer, tip rotated about 360° (Figs. 12–14) ............... T. alticolus

- Carapace with granulations (Figs. 1, 17, 20, 23, 36); embolus relative short, tip only curved, not rotated ................ 4

4. Conductor trapeziform ventrally (Fig. 37); retrolateral tibial apophysis triangular from retrolateral view (Fig. 39) .... ....................................................................................................................................................................... T. sinensis

- Conductor elongate oval ventrally (Fig. 33); retrolateral tibial apophysis rectangular from retrolateral view (Fig. 35) ..................................................................................................................................................................... T. japonicus

5. Copulatory openings posteriorly; epigynum with a M-shaped epigynal hood (Fig. 9) .............................. T. acuminus

- Copulatory openings anteriorly or centrally; epigynum without epigynal hood ......................................................... 6

6. Epigynal plate with two triangular impressions (Fig. 18) ....................................................................... T. fanjingshan

- Epigynal plate without impressions.............................................................................................................................. 7

7. Each spermatheca composed of two globose parts (Fig. 16) ........................................................................ T. alticolus

- Each spermatheca only with one globose part............................................................................................................. 8

8. Bursa situated in the inner part of copulatory openings (Fig. 22) ................................................................... T. fasciae

- Bursa situated in the outer part of copulatory openings .............................................................................................. 9

9. Bursa club-shaped (Fig. 41) ........................................................................................................................... T. sinensis

- Bursa globose (Fig. 32) ................................................................................................................................ T. japonicus