Nitidotachinus bini, Zheng, Dan-Lin, Li, Li-Zhen & Zhao, Mei-Jun, 2014

Zheng, Dan-Lin, Li, Li-Zhen & Zhao, Mei-Jun, 2014, Review of Nitidotachinus Campbell (Staphylinidae, Tachyporinae) from Mainland China, ZooKeys 447, pp. 87-107 : 93

Taxon classification Animalia Coleoptera Staphylinidae

Nitidotachinus bini sp. n. Figs 1F, 7

Type specimens.

Holotype:China: male, Qingliangfeng Reserve (alt.1080m), Zhejiang Prov., 10.V.2005, Li-Long Zhu & Li-Zhen Li leg. Paratypes:China: 3 males, 1 female, same data as holotype, but data from 8-10.V.2005; 1male, 2 females, Mt. Dapan Reserve (alt.550-800m), Pan’an County, Zhejiang Prov. 6-7.VI.2006, Li-Zhen Li & Shan-jia Shen leg.

Description.

Male (Fig. 1F): Body medium in size, 5.7-6.0 mm (total length); 2.8-2.9 mm; 2.5-2.8 mm (length of forebody). Color reddish brown with shine; head black, the 1st and 2nd segments of antennae, mouthparts, sides of pronotum, posterior margins of elytra, and legs light reddish brown.

Head 0.47 times as wide as pronotum. Surface finely and sparsely punctate, with dense and coarse microsculpture consisting of irregular meshes and transverse wave lines. Antennae long, reaching the apical third of elytra; the relative length of each segment from base to apex: 13.0: 8.0: 16.0: 11.0: 13.0: 13.0: 13.0: 13.0: 13.0: 12.0: 17.0; the 10th segment 1.60 times as long as wide. Maxillary palpus with relative lengths of 4th and 3rd segments: 16.5: 9.0.

Pronotum 0.63 times as long as wide; microsculpture shallower and punctures slightly sparser than those on head.

Elytra in sutural length 0.67 times as long as wide; 1.05 times as long as the median length of pronotum; punctures coarser than, and microsculpture similar to those on pronotum.

Abdomen sparsely and finely punctate and pubescent, with minute microsculpture only at sides of third tergite.

Male: Fore tarsal segments I–IV dilated; the relative lengths of hind tarsal segments from base to apex: 15.0: 5.0: 4.5: 4.0: 9.0. Eighth tergite (Fig. 7C) 4-lobed; inner lobes separated from each other by a V-shaped emargination, much longer than outer lobes. Sixth sternite (Fig. 7A) slightly emarginate at middle in apical margin, with 6-8 short peg setae on each side of the emargination. Seventh sternite (Fig. 7B) subtriangularly depressed at middle in posterior part, roundly emarginated at middle in apical margin, symmetrically covered with some short peg setae in apical half of the depression, densely covered with long black spiniform setae on apical margin. Eighth sternite (Fig. 7D) 2-lobed, deeply incised between two lobes, the depth 0.30 times as long as the median length of sternite. Aedeagus (Figs 7 G–H) with parameres longer than median lobe, tapered apicad.

Female: Fore tarsal segments I–IV normal. Eighth tergite (Fig. 7E) 4-lobed; inner lobes deeply separated with each other, about as long as outer lobes. Eighth sternite (Fig. 7F) 6-lobed; inner lobes distinctly separated from each other.

Distribution.

China (Zhejiang Province).

Remarks.

This new species is similar to Nitidotachinus taiwanensis . But can be separated from it by the shape of peg setae area of male seventh sternite; female eighth tergite with emargination between the inner lobes is distinctly shallower than those between inner and outer lobes; and parameres of aedeagus a little narrower in apical parts.

Etymology.

The specific name is named after the nick name of Xiao-bin Song.