Key to the nine Chinese species of Coecobrya

1. Eyes 3+3.............................................................................. C. mulun, Guangxi

- Eyes absent......................................................................................... 2

2. Manubrium with dorsal smooth chaetae (Fig. 3 B)............................................................ 3

- Manubrium without dorsal smooth chaetae................................................................. 6

3. Tibiotarsus with rows of “smooth” differentiated chaetae...................................................... 4

- Tibiotarsus without rows of “smooth” differentiated chaetae.................................................... 5

4. Abd. I with 6+6 central mac; Th. II with 3+3 medio-medial mac........................... C. tenebricosa, worldwide

- Abd. I with 4(3)+4(3) central mac; Th. II with 1+1 medio-medial mac................... C. brevis sp. nov., Guangdong

5. Abd. IV with 3+3 central and 4+4 lateral mac............................................... C. oligoseta, Jiangsu

- Abd. IV with 4+4 central and 3+3 lateral mac (Fig. 5 B)...................................... C. pani sp. nov., Jilin

6. Abd. III with 1+1 central mac (Figs 2 C, 5A)............................................. C. communis, worldwide

- Abd. III with 2+2 central mac............................................................................ 7

7. Abd. IV with 5+5 central mac............................................................... C. huangi, Tibet

- Abd. IV with at least 7+7 central mac...................................................................... 8

8. Abd. IV with 7+7 central mac................................................... C. liui, Sichuan, Qinghai, Tibet

- Abd. IV with at least 8+8 central mac....................................................... C. tibetensis, Tibet