[2] The males of Euthalia monina have blackish or dark brown wings, with a blue-green iridescence on the outer part.

The wings of the females are dark brown with pale greyish markings.

[3] Known host plants of the caterpillars include: Clidemia hirta (Melastomataceae), Diospyros melanoxylon (Ebenaceae), Macaranga hullettii, Mallotus subpeltatus (Euphorbiaceae), and Shorea robusta (Dipterocarpaceae).

[1][4] This species can be found in Asia, mainly in Borneo, Sumatra, Java, Peninsular Malaya, Sikkim - Assam, Myanmar, Cambodia and Thailand.

[1] This butterfly prefers small clearings, glades and trails in primary rainforests, at an elevation of 0–1,000 metres (0–3,281 ft) above sea level.