Quelaestrygon puetzi Smetana, 1999

Cai, Yanpeng, Li, Xiaoyan & Zhou, Hongzhang, 2020, First description of the male Quelaestrygon puetzi Smetana, 1999 (Coleoptera, Staphylinidae, Staphylinini) from China, ZooKeys 944, pp. 121-127 : 121

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.

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).

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 ).

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.

Figures

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.

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).

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.