Key to females of Micadina Redtenbacher, 1908 from China

1. Praeopercular organ on seventh abdominal sternum bifurcated posteriorly................................. M. conifera

- Praeopercular organ on seventh abdominal sternum pointed or rounded posteriorly or lacking noticeable praeopercular organ on seventh abdominal sternum.......................................................................... 2.

2. Cerci short, apices not exceeding posterior margin of anal abdominal segment....................... M. phluctainoides

- Cerci long, apices surpassing posterior margin of anal abdominal segment........................................ 3.

3. Posterior margin of anal abdominal segment truncate, lacking emargination...................................... 4.

- Posterior margin of anal abdominal segment rounded, with a median emargination................................ 7.

4. Apex of subgenital plate not reaching second half of ninth abdominal tergum.......................... M. yingdeensis

- Apex of subgenital plate surpassing second half of ninth abdominal tergum....................................... 5.

5. Apices of alae reaching fourth abdominal tergum..................................................... M. sonani

- Apices of alae reaching sixth abdominal tergum............................................................ 6.

6. Apices of abdominal subgenital plate reaching posterior margin of ninth abdominal tergum.............. M. zhejiangensis

- Apices of abdominal subgenital plate reaching middle area of ninth abdominal tergum.................... M. fujianensis

7. Apices of gonapophyses not extending beyond second half of anal abdominal segment.............................. 8.

- Apices of gonapophyses reaching posterior margin of anal abdominal segment.................................. 10.

8. Apices of alae reaching sixth abdominal tergum........................................................ M. reni

- Apices of alae only reaching fifth abdominal tergum......................................................... 9.

9. Body length longer than 50 mm ............................................................ M. brevioperculina

- Body length shorter than 50 mm ...................................................... M. songxiaobini sp. nov.

10. Alae short, apices only reaching fourth abdominal tergum......................................... M. brachyptera

- Alae long, apices reaching fifth or sixth abdominal tergum................................................... 11.

11. Apex of subgenital plate pointed.................................................................. M. bilobata

- Apex of subgenital plate rounded.............................................................. M. yasumatsui