Key to Chinese species of Zyras (Termidonia)

1 Body small (BL<7.0 mm).............................................................................................................................................2

- Body large (BL> 7.5 mm).............................................................................................................................................. 4

2 Coloration of the body yellowish.................................................................................................................................. 3

- Coloration of the body brownish-black (Hainan) ........................................................................ Z. (T.) diaoluomontis

3 Abdomen narrower than elytra; male paratergite III on either side with pronounced fork-like projection; male stern-

ite VII with spine-like process in the middle of posterior margin (Yunnan) ................................ Z. (T.) sexcuspidatus. - Abdomen wider than elytra; male paratergite III without projection; male sternite VII without process in the middle of posterior margin (Taiwan). .......................................................................................................... Z. (T.) abbreviatus.

4 Male tergite V modified............................................................................................................................................... 5

- Male tergite V without modification ............................................................................................................................8

5 Male tergite IV posteriorly with fork-like projection ................................................................................................... 6

- Male tergite IV posteriorly with tooth-like projection.................................................................................................. 7

6 Male posterior margin of tergite V in the middle produced and with bifurcate suberected process; scutellum of elytra larger; apico-lateral processes on median lobe of the aedeagus straight at apex in ventral view (Taiwan).. Z. (T.) viti.

- Male posterior margin of tergite V in the middle with pronounced tubercle; scutellum of elytra smaller; apico-lateral processes on median lobe of the aedeagus twisted at apex in ventral view (Hainan)............................ Z. (T.) fellowesi

7 Median lobe of aedeagus straight in ventral view; apico-lateral processes on median lobe of aedeagus anchor-shaped at apex in lateral view (Zhejiang, Jiangsu, Shangihai, Guizhou).............................................. Z. (T.) longwangmontis.

- Median lobe of aedeagus curved in ventral view; apico-lateral processes on median lobe of aedeagus forficate at apex in lateral view (Taiwan) .............................................................................................................. Z. (T.) implorans.

8 Male paratergite IV with two pair of short processes on either side; elytra as long as pronotum; median lobe of aedeagus straight in ventral view; apico-lateral processes on median lobe of aedeagus thicker, and sheet at apex in lateral view (Yunnan).................................................................................................................................. Z. (T.) nanbanensis

- Male paratergite IV without processes; elytra slightly shorter than pronotum (almost 0.86 times); median lobe of aedeagus curved in ventral view; apico-lateral processes on median lobe of aedeagus slender, and curved in lateral view (Yunnan)................................................................................................................................ Z. (T.) baihuamontis