Zyras (Termidonia) nabanensis

Yan, Zhu-Qi & Li, Li-Zhen, 2015, New species and additional records of the subgenus Termidonia Motschulsky of the genus Zyras Stephens in China (Coleoptera, Staphylinidae, Aleocharinae), Zootaxa 4028 (1), pp. 136-142 : 138-139

Zyras (Termidonia) nabanensis Z.-Q. Yan and L.-Z. Li, new species

( Fig. 2 )

Type material. Holotype: China: 1 ♂, labeled ‘ CHINA: Yunnan Prov., Xishuangbanna (西双版纳), Nabanhe N. R. (纳 版河自然保护区), 18.vi.2009, Ling-Zeng Meng leg.’; HOLOTYPE [red], Zyras nabanensis, Yan & Li det. 2015, ( SNUC); Paratype: 1 ♀, same label as above-mentioned, PARATYPE [yellow], Zyras nabanensis, Yan & Li det. 2015, ( SNUC).

Description. Body length: 9.45–9.78 mm. Coloration: head, elytra, blackish; pronotum reddish; abdomen blackish with the posterior margins of the segments reddish-brown; legs and antennae reddish to reddish-brown.

Head ( Fig. 2 A) approximately 1.22 times as long as wide; punctation sparse in median dorsal area, moderately sparse in lateral and posterior areas; eyes medium large and bulging, just 1.25 times as long as postocular region in dorsal view; Antennae not distinctly flattened and short, can almost reaching posterior margin of pronotum when directed caudad; antennomere III distinctly dilated apically, nearly twice as long as wide; Pronotum ( Fig. 2 A) squared, approximately 1.13 times as wide as head and 1.14 times as wide as long; punctation distinctly denser and coarser than that of head. Elytra dilated posteriad, at posterior margin approximately 1.27 times as wide, and at suture as long as pronotum ( Fig. 2 A); punctation conspicuously dense and defined, but finer than that of pronotum. Hind wings fully developed. Abdomen ( Fig. 2 A) approximately as wide as elytra at posterior margin, widest at segment V; microsculpture present, but mostly shallow; punctation fine and moderately dense; tergites IV and VII with pronounced sexual dimorphism.

Male: tergite IV conspicuously modified, posterior margin elongated and on either side with long and acute process ( Fig. 2 A); paratergite with two pair of short processes; tergite VII at posterior margin with pronounced tubercle ( Fig. 2 A); posterior margin of tergite VIII in the middle slightly concaved. aedeagus ( Figs. 2 G, 2H, 2I) with conspicuous processes.

Female: tergites IV, and VII unmodified; posterior margin of tergite VIII in the middle concave; spermatheca as in Fig. 2 F.

Measurements. BL: 8.45–9.78; FBL: 4.06–4.56; HW: 1.20–1.22; PL: 1.44–1.50; PW: 1.66–1.70; EL: 1.39–1.57; EW: 2.30–2.33.

Distribution. China: Yunnan.

Etymology. The specific epithet derives from the name of the type locality.

Comment. Based on the shape and coloration of body, the new species is similar to the Zyras (Termidonia) rougemonti Pace, 1986 . The new species can be distinguished from Z. (T.) rougemonti by having a cambered convex between two processes of the tergite IV, and by different sharp of the apico-lateral processes of median lobe of the aedeagus (in Z. (T.) rougemonti with a barb at apex in lateral view).

Figures

FIGURE 2. Zyras (Termidonia) nabanensis. A Habitus B male tergite VIII C male sternite VIII D female tergite VIII E female sternite VIII F spermatheca G median lobe of aedeagus, in ventral view H median lobe of aedeagus, in lateral view I median lobe of aedeagus, in dorsal view. Scales (mm): A = 2.0; F = 0.2; B, C, D, E, G, H, I = 0.5.