Anchocerus yunnanensis 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 : 59-60

Anchocerus yunnanensis Hu & Li , sp. nov.

( Figs. 8–13 )

Type material. Holotype: CHINA: male, Yunnan Prov., Baoshan City, Longling County, Xiaoheishan, alt. 2,050m, 28-V-2010, TANG Liang leg.

Description. BL: 12.8 mm, FL: 5.0 mm.

Body ( Fig. 8 ) dark brown; mouth parts, basal two segments of antennae, legs and apical margin of abdominal tergites reddish brown.

Head shorter than wide (HL/HW=0.88), not dilated behind eyes. Temples 2.33 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 right side of temple, of which one near posterior margin of eye, one near neck constriction; three laterally on left side of temple, of which two near posterior margin of eye, one near neck constriction. Surface with dense and fine non-setiferous punctation. Antennae slender; relative length of antennomeres (from I to XI, each measured from base to apex): 94.0: 52.0: 28.0: 20.0: 21.0: 23.0: 20.0: 18.0: 17.0: 15.5: 23.0; relative width of antennomeres (from I to XI, maximal width: 20.0: 12.0: 11.0: 10.5: 14.0: 14.0: 15.0: 17.0: 17.0: 18.0: 18.0.

Pronotum shorter than wide (PL/PW=0.89), longer (PL/HL=1.30) and wider (PW/HW=1.29) 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=0.74), slightly shorter (EL/PL=0.94) and wider (EW/PW=1.02) 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. 9 ) long and slender, with numerous long setae at apical portion; tergite X ( Fig. 10 ) gradually narrowed apically, with several long setae at apex and lateral margins. Aedeagus ( Figs 11–13 ) with median lobe very long and narrow apically; paramere very short, with rounded apex, without any setae.

Female. Unknown.

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

Remarks. The new species is close to A. pengzhongi sp.nov., from which it differs by the elytra being shorter than the pronotum, and the paramere lacking sensory peg setae. The densely and finely punctuate head, and the abdominal tergites with dense and transverse microsculpture also separate it from A. smetanai Schülke, 2011 .

Etymology. The specific epithet is derived from the type locality.

Figures

FIGURES 8 – 13. Anchocerus yunnanensis sp. nov. 8 — habitus; 9 — male sternite IX; 10 — male tergite X; 11 — aedeagus, in ventral view; 12 — same, in lateral view; 13 — paramere, in ventral view. Scale bars: a = 2 mm, b = 0.5 mm.