Tajuria megistia, the black royal is a species of lycaenid or blue butterfly found in the Indomalayan realm.Bernard d'Abrera (1986) Butterflies of the Oriental Region. Part 3: Lycaenidae and Riodinidae Hill House Publishers
Subspecies T. m. megistia Assam T. m. thria de Nicéville, Burma, Peninsular Malaya, Sumatra
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