A new species of Cyana Walker 1854, C. neopuer Singh, Bhattacharyya Volynkin, sp. nov. is described from North East India, Nepal and Myanmar. The species is closely similar to C. puer (Elwes 1890) but has significant differences in vesica of male genitalia. The details are discussed along with photographs. Distributional map of both the species is provided.
Keywords: Lithosiini, Cyana neopuer, male genitalia, Himalaya, Arunachal Pradesh, Sikkim, Nepal, Myanmar, Lepidoptera.