Chlaenius (Chlaenioctenus) li Liu & Liang sp. n., 2013

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 : 510

Chlaenius (Chlaenioctenus) li Liu & Liang sp. n.

( Figs. 9−12 , 22 , 28 , 34 , 42, 43 , 49 )

Specimen examined (total 4 specimens). Holotype: male ( IZCAS), “ China, Hainan Prov., Diaoluoshan Nature Reserve , on tree trunk, N18.72510, E109.86861 ’’ / “ 921m, 2012.4.18 N, Liu Y. & Shi H.L. leg., Institute of Zoology’’ / “ HOLOTYPE, Chlaenius (Chlaenioctenus) li sp. n., des. by Liu & Liang, 2012” [red label]. Paratypes (total 3 specimens): 1 female ( IZCAS), “ China, Hainan Prov., Diaoluoshan Nature Reserve , on ground, N18.72510, E109.86861 ” / “ 921m, 2012.4.16 N, Liu Y. & Shi H.L. leg., Institute of Zoology’’ / “ PARATYPE, Chlaenius (Chlaenioctenus) li sp. n., des. by Liu & Liang, 2012” [yellow label]; 1 female ( IZCAS), “ China, Hainan Prov., Diaoluoshan Nature Reserve , on ground, N18.72510, E109.86861 ” / “ 921m, 2012.3.20 N, Zhu Xiaoyu leg., Institute of Zoology’’ / “ PARATYPE, Chlaenius (Chlaenioctenus) li n. sp., des. by Liu & Liang, 2012” [yellow label]; 1 female ( IZCAS), “ China, Hainan Prov., Jianfengling Nature Reserve , Mingfenggu , “ N18.74363, E108.84311 ” / “ 982m, 2009.4.6 −6.15, Zhu Xiaoyu leg., Institute of Zoology’’ / “ PARATYPE, Chlaenius (Chlaenioctenus) li n. sp., des. by Liu & Liang, 2012” [yellow label].

Measurements. BL = 15.1−15.6 mm (mean = 15.4 mm), HW = 2.5−2.6 mm (mean = 2.5 mm), EYL = 0.9−1.0 mm (mean = 0.9 mm), PL = 3.2−3.4 mm (mean = 3.3 mm), PW = 3.5−3.8 mm (mean = 3.6 mm), EL = 8.7−9.0 mm (mean = 8.9 mm), EW = 5.0− 5.6 mm (mean = 5.4 mm), ratio PW/PL = 1.03−1.15 (mean = 1.10), EL/EW = 1.58−1.78 (mean = 1.66), EW/PW = 1.43−1.53 (mean = 1.48).

Description. Head and pronotum black, vertex with weak coppery shine, pronotum with strong coppery metallic shine laterally; elytra black, with a round yellow spot at posterior third of each elytron; ventral surface, coxae, trochanters, femora, tibiae and mandibles black, tarsi brown; antennomeres 1–3 black, 4–11 brown.

Head with vertex convex, finely and sparsely punctate; occiput densely punctate; genae glabrous, oblique, as long as one-fifth of eyes in dorsal view; lateral margins of mentum rounded. Pronotum ( Fig. 22 ) ovoid, widest in the middle; lateral margins distinctly bordered, sinuate before posterior angles; disc glabrous, finely and sparsely punctate, median line distinct, shallow; posterior angles nearly rectangular, rounded at apex; base coarsely punctate; basal foveae deep, coarsely punctate. Elytra moderately convex, widest in the middle; intervals ( Fig. 28 ) convex, intervals 2−8 smooth and glabrous medially, with a row of punctures and pubescence laterally (near to striae), intervals 1 and 9 punctate and pubescent throughout; yellow spot covering intervals 4−8. Proepisterna very sparsely punctate. Claws ( Fig. 34 ) curved, with 6−8 very short teeth. Aedeagus ( Figs. 42, 43 ) thin in lateral view, apical lamella rounded and very short. Gonostylus ( Fig. 50 ) with six short spines on outer margin.

Etymology. Latinized name li refers to Li ethnic nationality living in Hainan Island.

Remarks. Chlaenius li is an endemic species to Hainan Island ( Fig. 52 ). It is similar to C. freyi in having wholly black femora, and elytron with yellow spot at posterior third, but differs from the latter in head, pronotum glabrous and each of intervals 2−8 glabrous medially ( Fig. 28 ), gonostylus ( Fig. 50 ) with six spines on outer margin in contrast to head and pronotum pubescent, all elytral intervals regularly pubescent, gonostylus with only four spines in C. freyi .

Figures

FIGURE 52. Geographical distribution of Chlaenius (Chlaenioctenus) species.

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 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.

FIGURES 32–37. Hind claws of Chlaenius (Chlaenioctenus) species. 32, C. cheni, holotype. 33, C. bodhidharma, holotype. 34, C. li, holotype. 35, C. aodai, Holotype. 36, C. eneides, lectotype. 37, C. langsonensis, holotype. Scale bar = 0.5 mm.

FIGURES 38–47. Male genitalia of Chlaenius (Chlaenioctenus) species. 38, C. cheni, holotype (right lateral view). 39, C. cheni holotype (dorsal view). 40, C. bodhidharma, holotype (right lateral view). 41, C. bodhidharma, holotype (dorsal view). 42, C. li, holotype (right lateral view). 43, C. li, holotype (dorsal view). 44, C. aodai, holotype (right lateral view). 45, C. aodai, holotype (dorsal view). 46, C. eneides, lectotype (right lateral view). 47, C. eneides, lectotype (dorsal view). Scale bars: A = 1.0 mm (Figs. 38, 40, 42, 44, 46); B = 0.5 mm (Figs. 39, 41, 43, 45, 47).

FIGURES 48–51. Female gonostylus of Chlaenius (Chlaenioctenus) species. 48, C. cheni, paratype. 49, C. bodhidharma, paratype. 50, C. li, paratype. 51, C. eneides, paralectotype. Scale bar = 0.5 mm.