Four new riffle beetles from streams in central China, all at or under 2 mm long: Zaitzeviaria hemisphaerica from southern Shaanxi, its males carrying a hemispherically vaulted pronotum; Zaitzeviaria inflata from Shennongjia in Hubei; Zaitzeviaria shennongjia, also from Hubei and bicoloured; and Zaitzeviaria tongi from southern Shaanxi, named for Yanfeng Tong. The four were described from 437 specimens collected across Guizhou, Hubei, Shaanxi and Sichuan, from mountain streams between about 650 and 1,750 m. News article: https://bioengineer.org/four-new-riffle-beetle-species-discovered-in-streams-of-central-china/