Notes on Ypthima persimilis Elwes & Edwards and its closely related species (Lepidoptera, Nymphalidae, Satyrinae)

In this paper, Ypthima persimilis Elwes & Edwards, 1893 and its closely related species, including Y. atra Cantlie & Norman, 1959, Y. microconjuncta Lang, 2024, Y. angustipennis Takáhashi, 2000 and Y. luxurians Forster, 1948, are studied. Among them, Ypthima persimilis and Y. atra are very similar species in appearance and sympatric from N.E. India to S.W. China (S. Yunnan) and N. Vietnam. For a reliable specific identification of these species, diagnoses are provided mainly based upon androconia and male genitalia features.

Consequently, the taxon Ypthima atra taiwana Lamas, 2010 from Taiwan Island is reinstated to its specific status, viz. Y. taiwana stat. rev. Their ranges in China are discussed and a distributional map for all species is provided.