Chlaenius (Chlaenioctenus), Bates, 1892

Liu, Ye, Shi, Hongliang & Liang, Hongbin, 2013, Four new Chlaenius species (Coleoptera: Carabidae: Chlaeniini) from Asia and a key to the species of subgenus Chlaenioctenus, Zootaxa 3630 (3), pp. 505-518 : 506

Key to species of subgenus Chlaenioctenus Bates, 1892

(Modified from Liu et al. 2010)

1. Femora wholly black ( Figs. 10, 12 )....................................................................... 2

- Femora more or less yellow in the middle ( Figs. 2, 3 , 6, 8 , 14, 16 , 18 , 19)......................................... 5

2. Elytron with a yellow spot at posterior third ( Figs. 1, 3 , 9, 11 , 17 )............................................... 3

- Elytron with a yellow spot near the middle ( Figs. 5, 7 , 13, 15 , 19)............................................... 4

3. Each of elytral intervals 2−8 glabrous medially, with a row of pubescence laterally (near striae); pronotum glabrous, with coppery metallic shine laterally. China (Hainan) ( Figs. 9, 11 , 22 , 28 )........................................ C. li sp. n.

- All elytral intervals regularly pubescent; pronotum pubescent, with green metallic shine laterally. China (Jiangxi, Guangdong)................................................................................... C. freyi Jedlička, 1960

4. Each of elytral intervals 2-8 with a row of regular punctures laterally (near striae); pronotum finely punctate. Myanmar...................................................................................... C. pectinipes Bates, 1892

- Each of elytral intervals 2-8 with irregular punctures laterally (near striae), not displayed in a row; pronotum coarsely punctate. Thailand (Chiang Mai)........................................................... C. bilyi Kirschenhofer, 2009

5. Elytron with a yellow spot in or slightly behind the middle.....................................................6

- Elytron with a yellow spot at posterior third................................................................ 10

6. Elytral intervals regularly pubescent. China (Yunnan)......................... C. rotundithorax Liu & Kavanaugh, 2010

- Elytral intervals pubescent laterally, glabrous medially........................................................ 7

7. Elytron with a yellow spot in the middle; antennomeres 1−3 brown ( Figs. 5−8 ). India (Darjeeling).... C. bodhidharma sp. n.

- Elytron with a yellow spot slightly behind the middle ( Figs. 13, 15 , 19); antennomeres 1−3 totally or partly black......... 8

8. Lateral margin of pronotum sinuate before posterior angle ( Fig. 24 )............................. C. eneides Bates, 1892

- Lateral margin of pronotum straight before posterior angle ( Fig. 25 )............................................. 9

9. Antennomere 1 yellow or light brown, genae strongly tumid, as long as half of eye in dorsal view (Fig. 19) Vietnam (Mau Son)....................................................................... C. langsonensis Kirschenhofer, 2008

10. Antennomere 1 dark brown; genae slightly tumid, as long as one-third of eye in dorsal view. Myanmar (Kachin)................................................................................. C. schillhammeri Kirschenhofer, 2003

11. Genae pubescent. China (Taiwan) ................................................. C. piligenys Liu & Liang, 2010

- Genae glabrous...................................................................................... 11

12. Pronotum coarsely punctate; elytral intervals pubescent laterally, glabrous medially. China (Guangxi)................................................................................................ C. sehnali Kirschenhofer, 2008

- Pronotum finely punctate; elytral intervals regularly pubescent................................................. 12

13. Antennomeres 1−3 yellow; pronotum wider than long ( Figs. 1, 3 , 20 ). China (Guangdong)................ C. cheni sp. n.

- Antennomeres 1−3 black or brown; pronotum longer than wide ( Figs. 17, 18 , 23 ). Vietnam (Tam Dao)....... C. aodai sp. n.

Figures

FIGURES 9–12. Chlaenius li sp. n. 9, Holotype, male, dorsal view. 10, Holotype, male, ventral view. 11, Paratype, female, dorsal view. 12, Paratype, female, ventral view. Scale bar = 5.0 mm

FIGURES 1–4. Chlaenius cheni sp. n. 1, Holotype, male, dorsal view. 2, Holotype, male, ventral view. 3, Paratype, female, dorsal view. 4, Paratype, female, ventral view. Scale bar = 5.0 mm.

FIGURES 5–8. Chlaenius bodhidharma sp. n. 5, Holotype, male, dorsal view. 6, Holotype, male, ventral view. 7, Paratype, female, dorsal view. 8, Paratype, female, ventral view. Scale bar = 5.0 mm

FIGURES 13–16. Chlaenius eneides Bates, 1892. 13, Lectotype, male, dorsal view. 14, Lectotype, male, ventral view. 15, Paralectotype, female, dorsal view. 16, Paralectotype, female, ventral view. Scale bar = 5.0 mm

FIGURES 17–18. Chlaenius aodai sp. n. 17, Holotype, male, dorsal view. 18, Holotype, male, ventral view. FIGURE 19. Chlaenius langsonensis Kirschenhofer, 2008. Holotype, male. Scale bar = 5.0 mm.

FIGURES 20–25. Pronotum of Chlaenius (Chlaenioctenus) species. 20, C. cheni, holotype. 21, C. bodhidharma, holotype. 22, C. li, holotype. 23, C. aodai, holotype. 24, C. eneides, lectotype. 25, C. langsonensis, holotype. Scale bar = 1.0 mm.

FIGURES 26–31. Elytral intervals of Chlaenius (Chlaenioctenus) species. 26, C. cheni, holotype. 27, C. bodhidharma, holotype. 28, C. li, holotype. 29, C. aodai, holotype. 30, C. eneides, lectotype. 31, C. langsonensis, holotype. Scale bar = 1.0 mm.