Euthalia lubentina, the gaudy baron,[2][3] is a species of nymphalid butterfly found in South, Cambodia, and Southeast Asia.

Hindwing: the ground colour suffused with greenish blue on terminal posterior half of wing; markings similar to those of the male.

Forewing: the markings as on the upperside with the addition of two small black spots at base and an obscure broad terminal pale band.

Antennae, head, thorax and abdomen as in the male, but paler; the palpi beneath with a stripe of pink, the forelegs whitish.

[4][5] The lower foot-hills of the Himalayas from Haridwar to Sikkim, but recorded from Mussooree, at 10,000 feet (3,000 m); Oudh; Bengal; eastward through Bhutan, Assam, Cachar to Myanmar, Teuasserim, Siam, Malay Peninsula and Sumatra.