Platydracus juang Smetana, 2005

Huang, Jia-Yi, Chen, Jia-Wei & Tang, Liang, 2024, The genus Platydracus Thomson in Hainan, South China (Coleoptera, Staphylinidae, Staphylininae), ZooKeys 1212, pp. 129-141 : 129-141

Platydracus juang Smetana, 2005

Figs 2 , 9–12

Platydracus juang Smetana, 2005: 22; Xu and Tang 2019: 185; Hu 2020: 346; Zhou Zhao and Tang 2024: 508.

Material examined.

China – Hainan Prov. • 1 ♂; Jianfengling N. R. , decaying log; 15 Nov. 2009; Wen Dong leg.; SHNU • 1 ♀; Diaoluoshan N. R. ; alt. 1000 m; Dec. 2022; Zhou & Cai leg.; SHNU • 1 ♀; Ledong County, Jianfengling N. R., Mingfenggu , rainforest, decaying log; 18 ° 44 ' 30 ″ N, 108 ° 50 ' 29 ″ E; alt. 995 m; 26 Jan. 2015; Peng, Yin, Tu, Song, Shen, Zhou & Wang leg.; SHNU • 1 ♀; Lingshui County; Diaoluo Shan N. R. ; alt. 900 m; 22 May 2014; Qiu-Jian Yue leg.; SHNU .

Measurements.

Male: BL: 13.4–19.3 mm, FL: 6.89–10.55 mm. HL: 1.60–2.65 mm, HW: 1.91–2.84 mm, EYL: 0.62–0.80 mm, TL: 0.74–1.23 mm, PL: 2.28–3.39 mm, PW: 2.10–3.15 mm, EL: 2.71–4.07 mm, EW: 2.59–3.95 mm. HW / HL: 1.07–1.19, TL / EYL: 1.20–1.54, PL / PW: 1.08–1.15, EL / EW: 1.03–1.07. Female: BL: 12.3–20.0 mm, FL: 7.00– 9.67 mm. HL: 1.60–2.16 mm, HW: 1.97–2.59 mm, EYL: 0.56–0.74 mm, TL: 0.74–1.05 mm, PL: 2.34–3.15 mm, PW: 2.10–2.78 mm, EL: 2.71–3.70 mm, EW: 2.53–3.58 mm. HW / HL: 1.17–1.23, TL / EYL: 1.33–1.42, PL / PW: 1.11–1.13, EL / EW: 1.03–1.07.

Diagnosis.

The species is similar to P. brachycerus Smetana & Davies, 2000 , in most aspects, but it can be distinguished from the latter by the more rounded temples, longer pronotum, and sparser punctation of the head.

Distribution.

China (Anhui, Fujian, Guangdong, Guangxi, Hainan, Hunan, Jiangxi, Taiwan, Zhejiang).

Figures

Figures 1–4. Punctation of head and setae on the head and pronotum 1 P. hainanensis 2 P. juang 3 P. marmorellus with two types of setae 4 P. aureolus with one type of setae.

Figures 5–12. Habitus and aedeagus of Platydracus 5–8 P. marmorellus 9 – 12 P. juang 5, 9 dorsal habitus 6, 10 ventral habitus 7, 11 aedeagus in ventral view 8, 12 aedeagus in lateral view. Scale bars: 2.0 mm (5, 6), 1.0 mm (9, 10), 0.2 mm (7, 8), 0.5 mm (11, 12).