Key to the species of Pedioxestis based on female genitalia

1. Signum more-or-less ovate............................................................................................ 2

- Signum somewhat rhomboidal...................................................................................... 3

2. Lamella postvaginalis triangular; posterior margin laterally produced into small rounded process; antrum short, only laterally sclerotized ......... P. concaviuscula, sp. n.

- Lamella postvaginalis weak, posterior margin laterally not protruding; antrum long and sclerotized .............................................................................. P. isomorpha Meyrick

3. Lamella postvaginalis trapezoidal ..................................................... P. wuyiensis, sp. n.

- Lamella postvaginalis a narrow sclerotized band or somewhat ovate .......................... 4

4. Lamella postvaginalis a narrow sclerotized band, ostium bursae large and rectangular ........................................................................................... P. ferruginea Wang & Zheng

- Lamella postvaginalis ovate, ostium bursae small and rounded ........ P. bipartita, sp. n.