Abstract
The Cyana adelina (Staudinger, 1887) species-group is established and reviewed. Three new species and one new subspecies are described: Cyana yunnanensis regia ssp. n. (Northern Thailand and northern Laos), Cyana dubernardi sp. n. (China: Yunnan), Cyana khami sp. n. (central Laos), and Cyana karsticola sp. n. (northern Laos). Two new synonyms are established: Cyana yunnanensis yunnanensis (Hampson, 1903) (Chionaema) = Chionaema hoenei Daniel, 1952, syn. n., and Cyana griseilinea de Joannis, 1930 = Cyana succincta ern, 2016, syn. n. Lectotypes are designated for Bizone adelina Staudinger, 1887 and Bizone pratti Elwes, 1890. Adults, male and female genitalia are illustrated.
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