The species of the nominal subgenus of the lomechusine genus Zyras Stephens, 1835 of China, Taiwan, and Hong Kong are revised. In all, 50 named species, two of them of doubtful identity, are recognized, (re-)described, and illustrated, among them 33 new taxa: Zyras (Zyras) athetoides n. sp. (Sichuan), Z. (Z.) atrapicalis n. sp. ( Yunnan), Z. (Z.) atronitens n. sp. (Tibet), Z. (Z.) bangmaicus n. sp. (Yunnan), Z. (Z.) bicoloricollis n. sp. (Yunnan), Z. (Z.) bisinuatus n. sp. (Yunnan), Z. (Z.) caloderoides n. sp. (Yunnan), Z. (Z.) dabanicus n. sp. (Qinghai), Z. (Z.) discolor n. sp. (Fujian), Z. (Z.) exspoliatus n. sp. (Guangxi), Z. (Z.) extensus n. sp. (Yunnan), Z. (Z.) firmicornis n. sp. (Fujian), Z. (Z.) flexus n. sp. (Fujian), Z. (Z.) formosanus n. sp. (Taiwan), Z. (Z.) gilvipalpis n. sp. (Yunnan), Z. (Z.) granapicalis n. sp. (Sichuan), Z. (Z.) hebes n. sp. (Taiwan), Z. (Z.) inexcisus n. sp. (China: Gansu, Qinghai; Russia: Far East, East Siberia), Z. (Z.) lativentris n. sp. (Yunnan), Z. (Z.) maculicollis n. sp. (Yunnan), Z. (Z.) nigrapicalis n. sp. (Yunnan, Sichuan, Jiangxi, Taiwan), Z. (Z.) nigricornis n. sp. (Hubei, Gansu, Shaanxi, Sichuan, Qinghai), Z. (Z.) nigronitens n. sp. (Yunnan), Z. (Z.) pulcher n. sp. (Gansu, Sichuan), Z. (Z.) rectus n. sp. (Yunnan), Z. (Z.) rufapicalis n. sp. (Taiwan), Z. (Z.) rufoterminalis n. sp. (Hubei, Sichuan), Z. (Z.) schuelkei n. sp. (Fujian, Sichuan), Z. (Z.) subobsoletus n. sp. (Sichuan), Z. (Z.) tenebricosus n. sp. (Sichuan, Tibet), Z. (Z.) tenuicornis n. sp. (Taiwan), Z. (Z.) tumidicornis n. sp. (Taiwan), Z. (Z.) volans n. sp. (Taiwan). Previous records of five species from China are considered doubtful. As many as 19 species remain unnamed for want of mature males. A catalogue and a key to species are provided. The distributions of 46 species are mapped. Additional records and (re-)descriptions of 15 species from other — Palaearctic and Oriental — regions are provided. Two species are described for the first time: Z. (Z.) iniquus n. sp. (Pakistan) and Z. (Z.) articollis n. sp. (Laos). Seven synonymies and a new combination are proposed: Zyras beijingensis Pace, 1993 = Z. restitutus Pace, 1993, n. syn.; Zyras alboantennatus Pace, 1986 = Z. sichuanorum Pace, 2012, n. syn.; Z. birmanus Scheerpeltz, 1965 = Z. pseudobirmanus Scheerpeltz, 1965, n. syn.; Z. hongkongensis Pace, 1999 = Z. benenensis Pace, 2001, n. syn.; Z. kambaitiensis Scheerpeltz, 1965 = Z. ferrugineiventris Scheerpeltz, 1965, n. syn., = semiasperatus Scheerpeltz, 1965, n. syn.; Z. wei Pace, 1993 = Z. qingchengensis Pace, 2012, n. syn.; Zyras brignolii (Pace, 1986), n. comb. (ex Drusilla). Lectotypes are designated for Zyras chinkiangensis Bernhauer, 1939 and Z. seminigerrimus Bernhauer, 1933.