Taxonomic problems surrounding Barsine orientalis bigamica Cerný Pinratana, 2009 with description of a new species (Lepidoptera, Erebidae, Arctiinae, Lithosiini).

The taxonomic problems surrounding the taxon Barsine orientalis bigamica Cerný Pinratana, 2009 are preliminary elucidated. B. orientalis bigamica is raised to a specific level: B. bigamica stat. nov. Barsine kampoli Cerný, 2009 syn. nov. is synonymized with B. bigamica and the true holotype of this taxon is clarified. Barsine tongi Huang Volynkin sp. nov., a new species externally similar to B. bigamica is described from Hainan Island, S. China. The adult and genitalia of the species aforementioned and related are illustrated.