Platydracus marmorellus Fauvel 1895

Platydracus marmorellus Fauvel, 1895 Figs 3, 5–8 Staphylinus marmorellus Fauvel, 1895: 253. Platydracus marmorellus; Herman 2001: 14. Material examined. China – Hainan Prov. • 1 ♀; Ledong County, Jianfengling N. R.; alt. 1000 m; 10–23 May 2011; BI Wen Juan leg.; SHNU • 2 ♀♀; Ledong County, Jianfengling, Mingfenggu; 18 ° 44 ' N, 108 ° 50 ' E; alt. 950 m; 30 Apr. 2012; Peng & Dai leg.; SHNU • 1 ♂ 1 ♀; Ledong County, Jianfengling N. R., Mingfenggu; 18 ° 44 ' 30 ″ N, 108 ° 50 ' 29 ″ E; rainforest, decaying log; alt. 995 m; 26 Jan. 2015; Peng, Yin, Tu, Song, Shen, Zhou & Wang leg.; SHNU • 1 ♀; Ledong County, Jianfengling N. R., District V; 18 ° 43 ' 57 ″ N, 108 ° 52 ' 41 ″ E; broad-leaved forest, decaying log; alt. 975 m; 24 Jan. 2015; Peng, Yin, Tu, Song, Shen, Zhou & Wang leg.; SHNU • 3 ♀♀; Qiongzhong County, Limu Mt., path to peak; 19 ° 10 ' 27 ″ N, 109 ° 45 ' 29 ″ E; mixed forest, decaying log; alt. 1000 m; 1 Feb. 2015; Peng, Tu, Song, Shen, Zhou & Yan leg; SHNU • 1 ♂ 1 ♀; Lingshui County, Diaoluoshan N. R.; 18 ° 42 ' 2.66 ″ N, 109 ° 53 ' 19.32 ″ E; alt. 950–1050 m; Aug. 2023; FIT; Zhao leg.; SHNU • 1 ♀; Ledong County, Jianfengling, Mingfenggu; 18 ° 44 ' N, 108 ° 50 ' E; alt. 950 m; 29 Apr. 2012; Peng & Dai leg.; SHNU. Measurements. Male: BL: 14.8–18.4 mm, FL: 8.78–9.22 mm. HL: 1.85–2.07 mm, HW: 2.59–2.82 mm, EYL: 0.82–0.89 mm, TL: 0.82–0.89 mm, PL: 2.90–3.21 mm, PW: 2.84–3.15 mm, EL: 3.21–3.89 mm, EW: 3.39–4.32 mm. HW / HL: 1.35–1.44, TL / EYL: 1.00, PL / PW: 1.02–1.13, EL / EW: 0.90–0.97. Female: BL: 12.2–14.9 mm, FL: 7.67–9.11 mm. HL: 1.70–2.07 mm, HW: 2.15–2.45 mm, EYL: 0.82 mm, TL: 0.67–0.82 mm, PL: 2.53–3.02 mm, PW: 2.47–2.96 mm, EL: 2.96–3.39 mm, EW: 3.09–3.64 mm. HW / HL: 1.18–1.32, TL / EYL: 0.82–1.00, PL / PW: 1.00–1.03, EL / EW: 0.93–0.98. Diagnosis. The species is widely distributed in South China, and its detailed distributional information will be listed in a forthcoming paper by Qing-Hao Zhao. In general appearance, the species is similar to P. plagiicollis (Fairmaire, 1891) which overlaps in distribution. Yet, P. marmorellus can be easily distinguished from the latter by bearing pale appressed microsetae on the forebody, which are absent in P. plagiicollis. Distribution. China (Hainan), Myanmar, Vietnam, Indonesia. New to China.