First description of the male Quelaestrygon puetzi Smetana, 1999 (Coleoptera, Staphylinidae, Staphylinini) from China Author Cai, Yanpeng Morphological Laboratory, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, Guizhou, China Author Li, Xiaoyan Hebei Key Laboratory of Animal Diversity, Langfang Normal University Aiminxidao 100, Anci Area, Langfang 065000, Hebei Province, China Author Zhou, Hongzhang Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Rd., Chaoyang District, Beijing 100101, China & University of the Chinese Academy of Sciences, 19 A Yuquan Rd., Shijingshan District, Beijing, 100049, China zhouhz@ioz.ac.cn text ZooKeys 2020 944 121 127 http://dx.doi.org/10.3897/zookeys.944.53482 journal article http://dx.doi.org/10.3897/zookeys.944.53482 1313-2970-944-121 305F423623D34ACA86866D343D768760 C9C9C3FBF1DF50AA88A13A56C93F0455 Quelaestrygon puetzi Smetana, 1999 Figs 1 , 2 , 3 Quelaestrygon puetzi Smetana, 1999: 246 (type locality: China: Sichuan, Daxue Shan Gongga Shan, Mt. Hailuogou Glacier Park, 2620-1940 m). Material examined. 1 ♂; China, Sichuan Province, Mt. Emei, Leidongping; 8. VI. 2014; Chengbin Wang leg. Figure 1. Male of Quelaestrygon puetzi Smetana A head in dorsal view B pronotum in dorsal view C elytra in dorsal view, showing sculpture D head in lateral view, showing postmandibular ridge (a) and infraorbital ridge (b) E antenna, detail. Scale bars: 2.00 mm. Measurements. BL = 18.3 mm, BW = 4.1 mm, HL/PL/EL = 1.00: 0.96: 1.28, HW/PW/EW/AW = 1.00: 1.13: 1.28: 1.32, HW/HL = 0.94, HEL/HTL = 0.39, PW/PL = 1.11, EW/EL = 0.95, ESL/EL = 0.59. Description of female. See Smetana (1999 : 246-247). Figure 2. Male of Quelaestrygon puetzi Smetana, morphology A body in dorsal view B aedeagus, underside of paramere C aedeagus, apical portion of median lobe, parameral view. Scale bars: 5.00 mm ( A ), 0.50 mm ( B, C ). Description of male. Male with first four segments of foretarsus strongly dilated, sub-bilobed, each heavily covered with tenent setae ventrally, segment II slightly wider than apex of tibia; tergite VIII (Fig. 3A ) with basal ridge complete, nearly straight, with one long seta on each side, apical margin with shallow and narrow medioapical emargination; sternite VIII (Fig. 3B ) with basal ridge complete, slightly sinuate, with one long seta on each side, apical margin with shallow and wide medioapical emargination, a very small triangular area in front of the emargination impunctate; sternite IX (Fig. 3C ) with basal portion short and wide, apex almost truncate, apical margin forming indistinct M-shaped indention; tergite X (Fig. 3D ) with basal side broadly and shallowly concave, apical margin complete, forming a right angle; aedeagus robust and strongly sclerotized, in lateral view (Fig. 3E ) with apex of paramere distinctly not reaching that of median lobe, apical 1/4 of median lobe strongly bent toward parameral side, without any process at apex; aedeagus in parameral view (Fig. 3F ) with paramere distinctly narrower than median lobe, wide at base, then gradually narrowed into obtuse apex, forming a near triangle shape, median lobe parallel-sided laterally, distinctly constricted at apex, apex somewhat pointed (Figs 2C , 3F ); apical portion of paramere with four moderately long apical setae, and two similar subapical setae on each lateral side below apex, underside with seven small tooth-shaped processes along the more strongly sclerotized and pigmented midline, and 6-7 spike-like sensory peg setae arranged in cluster far below apex on each side (Figs 2B , 3G ). Figure 3. Male terminalia and genitalia of Quelaestrygon puetzi Smetana A male tergite VIII B male sternite VIII C male sternite IX D male tergite X E aedeagus, lateral view F aedeagus, parameral view G aedeagus, underside of paramere. Scale bars: 0.50 mm. Distribution. Quelaestrygon puetzi Smetana is at present known only from several mountain areas in Sichuan Province of China: Mt. Gongga, Mt. Jinping and Mt. Emei. The examined male specimen was hand-collected at a parking lot after landing on the collector's clothes.