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The black rajah is a medium-sized butterfly with a 70 to 80 mm wingspan. Above the butterfly is dark brownish-black with greenish or white discal bands across both the wings. The band is broken into spots towards the apex of the forewing. The hindwing has two similar-sized tails at veins 2 and 4. These tails are longer in the females and more pointed in the males.The underside is iridescent gray with orange , red and yellow patterns defined by black lines. it feeds on Bauhinia racemosa , pithecellobium dulce, and Tamarind.
Tropical forest , cultivated and populated areas.