Key to Nazeris species from Xizang

1 Head with non-umbilicate punctation (Hu et al. 2016: 476, Fig. 9) .................................................. N. zhujianqingi Hu & Li, 2016

- Head with umbilicate punctation....................................................................................................................................................... 2

2 Punctation of pronotum partly confluent (Hu et al. 2016: 475, Fig. 4); abdomen with rather fine microsculpture ........................... .............................................................................................................................................................. N. xizangensis Hu & Li, 2016

- Punctation of pronotum not confluent; abdomen lacking microsculpture ........................................................................................ 3

3 Male sternite VII with posterior margin prominent at middle .......................................................................................................... 4

- Male sternite VII with posterior margin excised at middle............................................................................................................... 5

4 Ventral process of aedeagus with V-shaped excision at apex in ventral view (Hu et al. 2008: 91, Fig. 5)......................................... ...................................................................................................................................................... N. motuensis Hu, Li & Zhao, 2008

- Ventral process of aedeagus with very narrow excision at apex in ventral view (Hu et al. 2016: 477, Fig. 18) ................................ .............................................................................................................................................................. N. biwenxuani Hu & Li, 2016

5 Male sternite VII with wide and shallow posterior excision at middle (Hu et al. 2008: 92, Fig. 8); dorso-lateral apophyses of aedeagus curved inward in ventral view (Hu et al. 2008: 92, Fig. 10) ................................................. N. tangi Hu, Li & Zhao, 2008

- Male sternite VII with narrow and deep posterior excision at middle (Fig. 3); dorso-lateral apophyses of aedeagus nearly straight in ventral view (Fig. 5) ............................................................................................................................................ N. zhifeii sp. nov.