Anchocerus pengzhongi Hu & Li

Hu, Jiayao, Li, Lizhen & Zhao, Meijun, 2012, Three new species of Anchocerus Fauvel (Coleoptera: Staphylinidae: Staphylininae), with an updated key to Chinese species, Zootaxa 3318, pp. 57-62 : 58-59

Anchocerus pengzhongi Hu & Li , sp. nov.

( Figs. 1–7 )

Type material. Holotype: CHINA: male, Guangxi Prov., Lingui County, Huaping Nature Reserve, Anjiangping, alt. 1,400–1,700m, 14-VII-2011, PENG Zhong leg. Paratypes: CHINA: 1 female, same data as holotype; 1 female, same locality as holotype, alt. 1,500m, 18-VII-2011, TANG Liang leg.

Description. BL: 12.6–13.9 mm, FL: 5.1–5.8 mm.

Body ( Fig. 1 ) dark brown; mouthparts, basal two segments of antennae, legs and apical margin of abdominal tergites reddish brown.

Head shorter than wide (HL/HW=0.94), distinctly dilated behind eyes. Temples 2.24 times as long as eyes. Dorsal macrosetae (one side only): one near antennal base; one medially between eyes; one postero-medially, closer to neck constriction than to posterior margin of eye; one medially near neck constriction; two laterally on temple, of which one near posterior margin of eye, one near neck constriction. Surface with dense and fine nonsetiferous punctation. Antennae slender; relative length of antennomeres (from I to XI, each measured from base to apex): 85.0: 50.0: 27.0: 21.0: 23.0: 21.0: 20.0: 19.0: 16.0: 14.0: 20.0; relative width of antennomeres (from I to XI, maximal width): 22.0: 12.0: 10.5: 10.5: 14.0: 14.0: 15.0: 17.0: 17.0: 18.0: 18.0.

Pronotum shorter than wide (PL/PW=0.86), longer (PL/HL=1.15) and wider (PW/HW=1.26) than head; with punctation finer than those on head. Dorsal macrosetae (one side only): One medial and two lateral.

Elytra with dense and coarse punctation and brown setae, shorter than wide (EL/EW=0.88), slightly longer (EL/PL=1.08) and wider (EW/PW=1.06) than pronotum. Wings well developed. Scutellum with punctation and setae similar to those on elytra.

Abdomen with coarse punctation except for median part of tergite II; tergite VII with whitish apical seam; all tergites with dense transverse microsculpture.

Legs densely covered with brown setae, all tibiae with lateral spines.

Male. Sternite IX ( Fig. 2 ) long and slender, with numerous long setae at apical portion; tergite ( Fig. 3 ) gradually narrowing apically, with several long setae situated at apical and lateral margins. Aedeagus ( Figs 4–6 ): median lobe slightly emarginate apically in ventral view, slightly curved ventrally at apical fourth in lateral view; paramere relatively wide, distinctly shorter than median lobe; with bunch of four setae and about 40 sensory peg setae at apex.

Female. Tergite X ( Fig. 7 ) with several long setae situated at apical and lateral margins. Second gonocoxite setose and elongate, with two long apical macrosetae.

Distribution. The species is known only from the type locality in Guangxi, Southwest China.

Remarks. The new species is close to A. giganteus Hu, Li & Zhao, 2010 and A. grandis Solodovnikov, 2008 , from which it can be distinguished by the smaller eyes and the median lobe being slightly emarginate at apex in ventral view. Additionally it differs from A. giganteus by having an entire paramere and from A. grandis by the head being densely and finely punctuate.

Etymology. The species is named in honor of PENG Zhong, who collected the male holotype.

Figures

FIGURES 1 – 7. Anchocerus pengzhongi sp. nov. 1 — habitus; 2 — male sternite 9; 3 — male tergite 10; 4 — aedeagus, in ventral view; 5 — same, in lateral view; 6 — paramere in dorsal view; 7 — female tergite X. Scale bars: a = 2 mm, b = 0.5 mm.