Mimathyma chevana, the sergeant emperor, is an Indomalayan butterfly of the family Nymphalidae. The species was first described by Frederic Moore in 1865.
There are two subspecies: M. c. chevana Sikkim, Assam, northern Myanmar M. c. leechii Moore, western and central China
Mimathyma chevana mimics Athyma opalina.
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