New species and new records of Lesteva Latreille, 1797 (Coleoptera Staphylinidae: Omaliinae) from China

New taxonomic, diagnostic and faunistic data for eighteen species of the genus Lesteva Latreille, 1797 from China are provided, of which three are described as new: L. (s.str.) concava Cheng, Li & Peng, sp. nov. (Anhui, Zhejiang), L. (s.str.) elongata Cheng, Li & Peng, sp. nov. (Zhejiang) and L. (s.str.) obesa Cheng, Li & Peng, sp. nov. (Chongqing). New provincial records are provided for L. (s.str.) brevimacula Ma & Li, 2012, L. (s.str.) cala Ma, Li & Zhao, 2012, L. (s.str.) cooteri Rougemont, 2000 and L. (s.str.) erythra Ma, Li & Zhao, 2012 from Anhui, L. (s.str.) dabashanensis Rougemont, 2000 from Anhui, Zhejiang and Jiangxi, L. (s.str.) elegantula Rougemont, 2000 from Anhui and Guizhou, L. (s.str.) fikaceki Shavrin, 2013 from Hunan, L. (s.str.) huabeiensis Rougemont, 2000 from Ningxia, L. (s.str.) ochra Li, Li & Zhao, 2005 from Anhui and Guizhou, L. (incertae sedis) rufimarginata Rougemont, 2000 from Hebei, L. (s.str.) rufopunctata rufopunctata Rougemont, 2000 from Qinghai, Anhui and Chongqing, L. (s.str.) submaculata Rougemont, 2000 from Anhui and Hubei.and Lesteva (s.str.) cordicollis Motschulsky, 1860, originally known from the Far East of Russia, is recorded from China (Heilongjiang) for the first time. The male sexual characters of L. rufimarginata Rougemont is described and illustrated for the first time. A key and some distribution maps of the Chinese species of Lesteva are provided.