Four new species, Diduga luteogibbosa n. sp., D. allodubatolovi n. sp., D. scalprata n. sp. and D. hainanensis n. sp. are described from China along with three newly recorded species, D. albicosta Hampson, 1891, D. nigridentata Bayarsaikhan Bae, 2019 and D. hanoiensis Bayarsaikhan Bae, 2019. A key to the Chinese species of the genus Diduga, with illustrations of adults and genitalia of examined species are presented.
Keywords: Lepidoptera, Lithosiini, Diduga, description, new species, taxonomy, distribution, new record, China.