Tagiades obscurus

Male. Upperside fuliginous-brown. Forewing with three minute subapical white dots, one of them, sometimes two of them, often absent; a minute dot at the end of the cell, another near the base of the second median interspace, and a third below it, in the middle of the first median interspace, sometimes one, sometimes two of them only present, sometimes all are wanting. Hindwing with indications of a curved discal series of spots darker than the ground colour, often altogether invisible. Cilia of both wings brown. Underside. Forewing paler than it is above, the hinder marginal area and a broad squarish patch at the hinder angle paler than the rest of the wing, the minute dots as above. Hindwing greyish-white, the costal and outer marginal areas somewhat suffused with brown; a curved series of dark brown discal spots, the lower ones usually mere dots, often invisible. Female. Upperside coloured like the male, but the shade of colour more variable in different examples in this sex than it is in the male, the sub-apical dots often larger (not always) and generally three in number; the spots in the disc much larger, the one at the end of the cell round, the outer spot near the base of the second median interspace usually conical, the one below it the largest and quadrate and two small spots lietween it and the hinder margin. …

Tagiades japetus have a wide range of occurrence. They are found from Sri Lanka and India to the Himalayas, and Indochina. They also occur throughout the Maritime Southeast Asia to the Philippines and down to Papua New Guinea and the surrounding islands, and northeastern Australia. They are commonly found in the edges of rainforests, vine thickets, and sometimes in cultivated lands.

The eggs are laid on the upper surface of young leaves. They hatch in about six days, whereupon they will construct a leaf shelter by cutting the edge of a leaf, folding a triangular piece back, and then attaching it with silk. During the day, they hide under this shelter and only emerge at night to feed. The larvae feed on leaves of vines belonging to the genus Dioscorea; including Dioscorea transversa, Dioscorea alata, and Dioscorea numularia. They may make other shelters as they grow larger. After about 23 days, they pupate inside their final shelter, emerging as adults after 10 days. The adults are quick flyers, maintaining a height relatively close to ground, generally under large trees, often resting under the leaves. They are usually encountered resting underneath leaf surfaces. They feed on nectar from flowers during the morning. Mating is not seasonal and adults emerge all throughout the year. However, the population is greatest during the wet season.