4. Eccoptolonthus eustilbus (Kraatz, 1859) Kraatz, 1859: 98 (Philonthus, type locality: Ceylan); Bernhauer & Schubert, 1914: 337 (Philonthus, catalog); Cameron, 1932: 150 (Philonthus, Ceylon, India); Scheerpeltz, 1933: 1341 (Philonthus, catalog); Cameron, 1933: 387 (Philonthus, Sumatra); Scheerpeltz, 1954: 114 (Philonthus, cited as Phylonthus, Ceylon); Coiffait, 1982: 232 (Philonthus, India); Herman, 2001a: 2819 (Philonthus, catalog); Smetana, 2004: 644 (Philonthus, catalog of Palaearctic region); Hayashi, 2005: 68 (Philonthus, Taiwan); Hayashi, 2008: 152 (Pseudohesperus, Taiwan); Li & Zhou, 2011: 697–670 (China: Guangxi, Hainan); Newton, 2015: 13 (transferred to Eccoptolonthus); Schülke & Smetana, 2015: 1021 (Eccoptolonthus, catalog); Li, 2019: 424 (Eccoptolonthus, catalog). Syn.: Philonthus versicolor Cameron, 1919: 254 (type locality: Ceylon); Cameron, 1932: 150 (Philonthus, synonym of E. eustilbus); Scheerpeltz, 1933: 1341 (Philonthus, synonym of E. eustilbus). Materials examined. China: Guizhou: 1 ♂, Guiyang: Huaxi town, field roadside (26°4106′ N, 106°6697′ E), 1000 m, 11.IX.2005, collected by Liu Ye (IZ-CAS); Hainan: 1 ♂, 1 ♀, Xinglong (18°44’N, 110°11’E), 41 m, 22. III.2008, collected by Li Liang (IZ-CAS); 1 ♂, 2 ♀♀, Bawangling (19°04’N, 108°49’E), 1050 m, 21.XII.2007, collected by Yang Zhuo (IZ-CAS); 1 ♂, Bawangling eart of the second area (19°14’N, 108°29’E), 1050 m, 19.XII.2007, collected by Yang Zhuo (IZ-CAS); 12 ♂♂, 24 ♀♀, Bawangling (19°04’N, 108°49’E), 300–800 m, 28–30.XI.2008, collected by Zhao Zongyi (IZ-CAS); 5 ♂♂, 9 ♀♀, Jianfengling (18°42’N, 108°52’E), 620 m, 25.XI.2008, collected by Zhao Zongyi (IZ-CAS); 2 ♂, 4 ♀♀, Baisha county: Nankai country (19°04’N, 109°31’E), 250–300 m, 20.IX.2008, collected by Zhao Zongyi (IZ-CAS); Guangxi: 4 ♂♂, 3 ♀♀, Pingxiang county: Daqingshan (22°11’N, 106°45’E), 3600 m, 24. III.1998, collected by Zhou Haisheng (IZ-CAS); 2 ♂♂, 15 ♀♀, Fangchenggang: Fulong (21°46’N, 108°35’E), 220 m, 16. III.1998, collected by Zhou Haisheng (IZ-CAS); 2 ♂♂, Chongzuo: Nalong (22°45’N, 107°31’E), 290 m, 20. III.1998, collected by Zhou Haisheng (IZ-CAS); Yunnan: 1 ♂, Nabanhe National Nature Reserve, Jinghong North Mekong Hill Garden (22°02712’N, 100°78666’E), 19. V.2008, collected by A. Weigel. Distribution. China (Hainan, Guangxi, Guizhou, Taiwan, Yunnan), India (Sikkim Darjeeling District, Uttarakhand), Indonesia (Sumatra), Sri Lanka.

Published as part of Fei, Xu-Dong & Zhou, Hong-Zhang, 2021, Revision of Eccoptolonthus Bernhauer (Coleoptera: Staphylininae: Philonthina) with descriptions of four new species from China, pp. 473-498 in Zootaxa 4949 (3) on page 484, DOI: 10.11646/zootaxa.4949.3.3, http://zenodo.org/record/4640469