Corresponding author: Zi-Wei Yin (
Academic editor: V. Assing
The monotypic genus
Yin Z-W, Jiang R-X (2016) Taxonomic notes on the genus
The genus
The type material of the new species is housed in the Insect Collection of Shanghai Normal University, Shanghai, China (
The collecting data of the material are quoted verbatim. The Chinese translation of each locality is included in parentheses at the first appearance in the text. Each type specimen bears the following label: ‘HOLOTYPE (red) (or PARATYPE (yellow)), ♂ (or ♀),
Dongshanpo, Liupanshan National Nature Reserve, Jingyuan County, northwestern China.
Holotype ♂, labeled ‘China: Ningxia A. R., Jingyuan Coun. (泾源县), (Liupanshan National Nature Reserve (六盘山自然保护区)), Dongshanpo (东山坡), alt. 2,200 m, 23.vi.2008, (Berlese Funnels), Yun Bu leg.’ (SNUC).
This species can be separated from all congeners by the following combination of characters: 1) relative small body size (1.89 mm), 2) lateral margins of the frontal rostrum narrowing anteriorly, and roundly dilating laterally at the antennal bases, 3) unmodified protrochanter and metaventrite, and 4) unique structures of the aedeagal endophallus (Fig.
(1 ♂, 5 ♀♀)
Lateral margins of frontal rostrum before eyes sloping anteriorly, roundly dilating laterally at level of antennal bases; maxillary palpomere I only slightly shorter than II; male lacking ventral protuberance at ventral margin of the protrochanter, metaventrite unmodified; impressed area of sternite IV longer than wide and almost reaching posterior margin of the segment.
Male (Fig.
Female, similar to male in general appearance; each eye composed of nine small facets. Measurements of body parts: body length 2.24 mm, length of head 0.44–0.46 mm, width of head 0.27–0.29 mm, length of antenna 1.19–1.20 mm, length of pronotum 0.43–0.44 mm, width of pronotum 0.38 mm, length of elytra 0.59–0.61 mm, width of elytra 0.77–0.80 mm, length of abdomen 0.75–0.76 mm, width of abdomen 0.87 mm.
Southwestern China: Sichuan.
The specific epithet is taken from the type locality of the new species, i.e., Siguniang Mountain.
We thank Sergey Kurbatov (Moscow, Russia), Peter Hlaváč (Prague, Czech Republic), and an anonymous reviewer for critically reading the manuscript. The present study was supported by grants of the National Natural Science Foundation of China (No. 31501874), and the Science and Technology Commission of Shanghai Municipality (No. 15YF1408700).