Key to Chinese Thylacosceles species based on male genitalia

1 Saccus approximately half length of uncus (Fig. 14)......................................... T. ellipsoidala sp. nov.

- Saccus much shorter than half length of uncus.............................................................. 2

2 Anellus lobes clavate, longer than juxta (Fig. 11).............................................. T. clavata sp. nov.

- Anellus lobes clubbed, shorter than juxta.................................................................. 3

3 Cucullus nephroid (Fig. 10)............................................................ T. nephroides sp. nov.

- Cucullus cuneal (Fig. 12)............................................................. T. cuneiformis sp. nov.