Agatasa calydonia
 
Agatasa is a butterfly genus in the brush-footed butterflies family (Nymphalidae). It is monotypic, containing only Agatasa calydonia, the glorious begum, which is found from southern Burma, through the Thai-Malay Peninsula, to Borneo, Sumatra and the Philippines. 
It is A large and magnificent butterfly. It occurs as a rarity in India, Myanmar, Thailand, Laos, West Malaysia, Sumatra, Borneo and the Philippines.