Dayao pengzhongi Yin, Li & Zhao

Yin, Zi-Wei, Li, Li-Zhen & Zhao, Mei-Jun, 2011, Dayao gen. n. of the subtribe Tyrina (Coleoptera, Staphylinidae, Pselaphinae) from South China, ZooKeys 141, pp. 45-52 : 47-49

Dayao pengzhongi Yin, Li & Zhao sp. n. Figs 113

Type material.

(1 ♂, 3 ♀♀). Holotype: ♂, labelled 'CHINA: Guangxi Prov. / Laibin City, Jinxiu County / Dayao Mt., 7 km / 1,200-1,400 m, 22.vii.2011 / Z. Peng leg. // [red label] HOLOTYPE / Dayao pengzhongi Yin et al. / SHNU Collections’. Paratypes: 3 ♀♀, same label data as holotype, except '23.vii.2011 / Z.W. Yin & J.Y. Hu leg.', all bear the following label: '[yellow label] PARATYPE / Dayao pengzhongi Yin et al. / SHNU Collections’.

Description.

Male (Fig. 1). Length 2.95 mm (holotype). Head lengthily and bluntly triangular, HL 0.74 mm, HW 0.59 mm, with decumbent setae. Vertexal foveae located posterior to point level with posterior margin of eyes. Eyes prominent, each with about 35 facets. Antennae elongate (Fig. 2), scape longer than II–IV combined, II–IV each short, of same width, V–VIII each longer than II–IV, slightly narrower, of same width, shortened distally, antennomeres of club (Fig. 8) of about same width, IX slightly expanded laterally at basal third, X shorter than IX and XI, XI longer than IX, with rounded apex. Pronotum (Fig. 4) as long as wide, PL 0.66 mm, PW 0.64 mm, with ‘Y’ -shaped sulcus in anterior half, tufts of long golden setae at anterior margin of sulcus directed posteriorly. Elytra wider than long, EL 0.81 mm, EW 1.05 mm, lacking ridges. Venter (Fig. 6) with long metaventral process (Fig. 7) bent posteriorly near apex; metaventrite smooth, convex medially in apical half, with dense long setae at lateral portions and sparse minute setae at middle. Legs long, protibiae with small apical spines, pro- and mesofemora with distinct erect setae at ventral margins. Abdomen wider than long, AL 0.74 mm, AW 1.03 mm; discal carinae on tergite IV extending two-fifths of tergal length; tergite VIII transverse, narrowed apically in posterior half, with shallow median emargination, tergite IX (Fig. 10) semi-membranous, with apical portion strongly sclerotized; sternites VIII transverse. Aedeagus (Figs 11-13) length 0. 48 mm.

Female. In general similar to male. Antennomere IX (Fig. 3) and pronotum (Fig. 5) unmodified, metaventrite lacking process, protibiae simple. BL 2.81-2.99 mm, HL 0.71-0.73 mm, HW 0.57-0.59 mm, PL 0.63-0.66 mm, PW 0.62-0.64 mm, EL 0.74-0.78 mm, EW 1.07-1.10 mm, AL 0.73-0.82 mm, AW 1.12-1.15 mm. Eyes each with about 30 facets.

Etymology.

The specific name recognizes the efforts of Zhong Peng in collecting the male holotype.