The male white-banded royal above is a shining bright blue up to base of 4 in the forewing. On the hindwing is a mid-costal white patch. The male has a large but inconspicuous brand on the upperside of the hindwing. The female is a pale dull powdery blue with a broad black border on both wings. The underside is pale brown with no bars end cell. The forewing has an outwardly white-edged discal line curved inwards.[6]
^Haribal, Meena (1992). The Butterflies of Sikkim Himalaya and Their Natural History. Gangtok, Sikkim, India: Sikkim Nature Conservation Foundation. p. 106.
References
Beccaloni, George; Scoble, Malcolm; Kitching, Ian; Simonsen, Thomas; Robinson, Gaden; Pitkin, Brian; Hine, Adrian; Lyal, Chris. "The Global Lepidoptera Names Index (LepIndex)". Natural History Museum, London. Retrieved 2016-10-15.