Hyllus semicupreus

Chandana Witharanage posted a photo:

Hyllus semicupreus, the heavy-bodied jumper, also known as the semi-coppered heavy jumper, is a species of spider of the genus Hyllus. It is native to India and Sri Lanka.

Heavy-bodied jumper spiders can be seen commonly among foliage and within tree trunks. They construct oval, thick silken webs on the undersides of leaves, such as the leaf spikes of coconut trees. During the daytime, the sac is uninhabited, but at night, the male occupies the sac. Sometimes, though, the female also inhabits it.