Hybridolinus fengyangshanus Li & Zhou

Li, Liang & Zhou, Hong-Zhang, 2010, Taxonomy of the genus Hybridolinus Schillhammer (Coleoptera: Staphylinidae: Philonthina) from China, Zootaxa 2360, pp. 34-46 : 40-44

2. Hybridolinus fengyangshanus Li & Zhou sp. n.

( Figs. 4 , 6 H, 7A–C)

Type material. Holotype: CHINA: Zhejiang: 3, Fengyang Shan, Longquan County (27°55´N, 119°10´E), 1406 m, 28.VII.2007, Zhao Zongyi & Yang Zhuo collected (IZ-CAS).

Description. Head and pronotum black, shining. Antennae with basal two segments reddish, 3rd–8th segments black, last three segments creamy white. Elytra brick-red, posterior margin narrowly yellowish; each elytron with large, triangular, postero-lateral black patch, not reaching suture. Scutellum black. Abdomen black with metallic blue reflex, posterior margins of tergites III–VII narrowly reddish-yellow; tergite VIII and styli of tergite IX entirely black. Mandibles dark brown; maxillary and labial palpi reddishbrown. Legs entirely reddish.

Body 11.2 mm long (HPL = 3.84 mm). Head transversely subrectangular, 1.55 mm long, 2.29 mm wide, distinctly wider than long (HW:HL = 1.47). Tempora 0.41 mm long, almost evenly rounded, closely and finely punctate; eyes very large, 0.74 mm long, about 1.80 times as long as tempora. Dorsal surface of head with moderately numerous, large setiferous punctures, becoming sparser toward vertex, vertex largely impunctate; entire head without microsculpture. Antennae moderately long, first three segments bearing only sparse strong setae, 4th–7th segments slightly oblong, 8th–10th segments almost as long as wide, 11th segment obliquely truncate at apex.

Pronotum 2.04 mm long, 2.04 mm wide, slightly narrower than head (PW:HW = 0.89), widest in front of middle, densely and finely punctate, punctures separated by 2–3 times their diameter, narrowly impunctate along midline, microsculpture very faint.

Elytra 2.69 mm long, 2.94 mm wide (EL:PL = 1.32), densely and finely punctate, punctures separated by 2–3 times their diameter. Scutellum densely and coarsely punctate and pubescent.

Abdomen a little narrowed behind, widest 2.45 mm, finely and densely punctate, punctures separated by 2–3 times their diameter at base, gradually becoming sparser toward apex of each tergite. Male. Aedeagus ( Figs. 4 A–B) with median lobe rather large at base; apical portion of median lobe in lateral view with slight subapical emargination on face adjacent to paramere ( Fig. 4 F); paramere more or less symmetrical, with wide, shallow medio-apical emargination, underside of each parameral lobe with group of small irregularly arranged sensory peg setae ( Figs. 6 H, 7A–C).

Female. Unknown.

Remarks. Hybridolinus fengyangshanus Li & Zhou sp. n. is similar to H. hesperoides Schillhammer, 1998 in its large eyes, distinctly transverse head, faint microsculpture on head and pronotum and the coloration of elytra and abdominal tergites. However, the new species can be easily distinguished from H. hesperoides by the antennae with three apical segments creamy white (two in H. hesperodes ) and larger number of peg setae situated on underside of paramere. The new species is similar to H. diabolicus Schillhammer, 1998 in the morphology of aedeagus, but cannot be mistaken for that species because H. diabolicus is almost entirely black.

Distribution. The species is at present known only from China (Zhejiang).

Etymology. The species name refers to the name of the type locality, Fenyangshan.

Figures

FIGURE 4. Hybridolinus fengyangshanus Li & Zhou sp. n. A, aedeagus; B, aedeagus, ventral view; C, sternite IX of male; D, sternite VIII of male; E, tergite X of male; F, apical portion of median lobe of aedeagus, lateral view. Scale bars 0.5 mm.

FIGURE 6. Details of Hybridolinus. Hybridolinus smetanai: A, aedeagus; B, apical portion of median lobe of aedeagus, lateral view; C, sternite IX of male; D, sternite VIII of male; E, tergite X of male. Apical portion of underside of paramere: F, H. baoxingensis Li & Zhou sp. n.; G, H. decipiens; H, H. fengyangshanus Li & Zhou sp. n.; I, H. smetanai. Scale bars 0.5 mm.