Platydracus juang Smetana, 2005

Zhou, Cheng-Lin, Zhao, Qing-Hao & Tang, Liang, 2024, A taxonomic study of the Platydracus brachycerus group with descriptions of three new species from China (Coleoptera: Staphylinidae, Staphylininae), Zootaxa 5399 (5), pp. 505-516 : 508

Platydracus juang Smetana, 2005

( Figs. 3, 4 , 15, 16 , 25, 27 )

Platydracus juang Smetana, 2005: 22 ; Xu & Tang 2019: 185; Hu 2020: 346 .

Material examined. China: Zhejiang: 1♁, Longquan City, Fengyangshan N. R ., Datianping , 27°54′29.67″N, 119°10′31.45′′E, alt. 1350m, 30.IV.2016, mixed leaf sifted, Jiang, Liu & Zhou leg. ( SHNU); 1♁, Lin′an City, W. Tianmushan , alt. 1000–1500m, 24.VII.2014, Yu leg. ( SHNU); 2♁, Jinhua City, Pan′an county Dapanshan N. R ., path to the peak , 28°57′37.98″N, 120°30′50.60″E, alt. 531–845m, 6.V.2016, Jiang, Liu & Zhou leg. ( SHNU); 3♀, Anji City, Longwangshan , 30°25′N, 119°26′E, alt. 1100–1480m, 10.VI.2012, Hu & Yin leg. ( SHNU); 1♀, Longquan City, Fengyangshan N. R ., Mihougu , 27°55′0.18″N, 119°11′52.91″E, alt. 1116m, 3.V.2016, Jiang, Liu & Zhou leg. ( SHNU); 1♀, Lishui City Qingyuan County, Baishanzu , alt. 1000m, 25.V.2008, Huang & Yan leg. ( SHNU); 1♀, Lin′an City, Tianmushan N. R . , alt. 350m, 20.IV.2008, Bi leg. ( SHNU); Anhui: 1♁, Guniujiang , alt. 950–1050m, 28.IV.2005, Hu & Tang leg. ( SHNU); 1♀ Qianshan County, Tianzushan, 18–20.V.2007, Tang & He leg. ( SHNU); Jiangxi: 1♁, Jinggangshan City, Ciping Town , alt. 850m, 21.X.2010, Peng, Zhai & Zhu leg. ( SHNU); Guangxi: 2♁, Jinxiu County, Lianhuashan, pine forest , mixed leaf litter, humus sifted, 24°09′35″N, 110°07′05″E, alt. 1080m, 14.VII.2014, Peng, Song, Yu & Yan leg. ( SHNU); 1♁ 1♀, Jinxiu County, Luohanshan , beech forest, mixed leaf litter, grass sifted, 24°08′02″N, 110°07′38″E, alt. 790m, 12.VII.2014, Peng, Song, Yu & Yan leg. ( SHNU); ( SHNU); 1♁, Huanjiang, Jiuwan Mt, Yangmeiao , FIT, 5°12′N, 108°40′E 25, alt. 1250m, IV.2021, Tang Peng Cai & Song leg. ( SHNU); 2♀, Damingshan , 23°23′N, 108°29′E, alt. 1200–1300m, 30.VII.2012, Hu & Song leg. ( SHNU); Fujian: 1♁4♀, Wuyishan City, Guadun Village , 27°44′N, 117°38′E, alt. 1300m, 2.VI.2012, Peng & Dai leg. ( SHNU); 1♀, Wuyishan City, Guadun Village , 27°43′N, 117°38′E, alt. 1300m, 9–11.IV.2013, Bi leg. ( SHNU); 1♀, Guihe Village , Meihuashan, alt. 1200m, 1.VI.2007, Huang & Xu leg. ( SHNU); Hunan: 1♁, Chenzhou City, Yizhang county, Mangshan N. R . , 24°56′26″N, 112°59′18″E, alt. 1400m, 26.IV.2015, Peng, Tu & Zhou leg. ( SHNU) ; Hainan: 1♀, Ledong County, Jianfengling N. R ., Mingfenggu , rainforest, decaying log, 18°44′30″N, 108°50′29″E, alt. 995m, 26.IV.2015, Peng, Tu & Zhou leg. ( SHNU) ; Guangdong: 1♀, Shaoguan, Ruyuan N. R ., Nanling , 24°55′07″N, 113°05′06″E, 25.V.2021, Zhan & Li leg. ( SHNU) ; Taiwan: 1♁ Pingdong County, Dahanshan , 22°24′36″N, 120°45′09″E, alt. 1300m, 4.IV.2017, Chung leg. ( SHNU) .

Measurements. Male: BL: 12.0– 18.6 mm, FL: 6.6–9.2 mm. HL: 1.57–2.39 mm, HW: 1.90–2.72 mm, EYL: 0.56–0.77 mm, TL: 0.71–0.97 mm, PL: 2.28–3.07 mm, PW: 2.00– 2.84 mm, EL: 2.70–3.72 mm, EW: 2.60–3.89 mm. HW/HL: 1.09–1.15, TL/EYL: 1.00–1.36, PL/PW: 1.02–1.16, EL/EW: 1.01–1.11.

Female: BL: 12.0– 14.9 mm, FL: 6.3–7.9 mm. HL: 1.58–2.07 mm, HW: 1.90–2.43 mm, EYL: 0.54–0.69 mm, TL: 0.72–0.92 mm, PL: 2.20–2.77 mm, PW: 2.05–2.60 mm, EL: 2.58–3.26 mm, EW: 2.56–3.23 mm. HW/HL: 1.15–1.20, TL/EYL: 1.22–1.38, PL/PW: 1.07–1.11, EL/EW: 1.00–1.01.

Distribution. This species is widely distributed in the south-east of China (Zhejiang, Anhui, Jiangxi, Guangxi, Fujian, Hunan, Hainan, Guangdong, Taiwan, Hunan, Guangxi, Guangdong, Hainan), presumably only in the mountains, at elevations between 350–1500 m.

Diagnosis. The species is similar to P. brachycerus in appearance, but it can be distinguished from the latter by the more rounded temples, longer pronotum, and finer punctation of the head.

Figures

FIGURES 1–6. Habitus. 1, 2—Platydracus brachycerus; 3, 4—P. juang; 5, 6—P. smetanai. Scale bars: 2 mm.

FIGURES 13–18. Aedeagal characters. 13, 14—Platydracus brachycerus; 15, 16—P. juang; 17, 18—P. smetanai; 13, 15, 17— aedeagus in ventral view; 14, 16, 18—aedeagus in lateral view. Scale bars: 0.5 mm.

FIGURES 25–27. Details of morphology of Platydracus. 25—P. juang; 26—P. pseudopaganus pseudopatricius (Müller, 1926); 27—A living P. juang in termite tunnel (Photo by Mr. Yu-Jie Cai from Hainan, Linshui County, Diaoluoshan N. R., on 20 Novemeber 2022).