Rohana parisatis pseudosiamensis

Nguyén-Phung 1985 - The Siamese Black Prince

Koh Samui only.

This species shows extreme sexual dimorphism. The male upperside is without any markings except for a tiny white apical spot. It is not uncommon at forest edges and glades.

Flight Period



50 - 53mm

Early Stages

Only partially known. More detailed life history information is available from the following resources: S. Igarishi - Life Histories of Asian Butterflies, Volume.2 , Page 511

Larval Foodplant

Impatiens violaeflora (Balsaminaceae). Outside Thailand, it has been recorded feeding on various Celtis species(Ulmaceae)


Thailand and Malay Peninsular. Other subspecies from Sri Lanka and India to China and Sundaland, including Palawan.