Male Atlas Moth (Attacus atlas) just emerged from the coccoon.
South East Asia

The Atlas Moth has the largest wing surface area of all moths. It is so named because its wing patterns resemble maps. The wing tips are hooked and some say resemble a snake's head complete with eye, to scare off predators.

Female Atlas Moths attract males by secreting a pheromone through a gland at the end of the abdomen. The male has huge long feathery antennae to track down the female by her pheromones. The females are much larger than the males and don't have feathery antennae. Male atlas moths can detect odor-carrying molecules called pheromones released by females at a distance of many kilometers away.

Adult Atlas Moths don't eat at all throughout their adult life which lasts for about two weeks. An adult Atlas Moth doesn't even have a mouth and lives off fat reserves built up when it was a caterpillar. The adults quickly mate, lay eggs, and die shortly thereafter.

Here is a pair mating