The number of generations of "Papilio demoleus" is dependent upon temperature - near the equator, nine generations have been recorded, while in warm temperate China, five generations have been recorded. In the ideal conditions of a laboratory, a generation has been recorded to take place in just over 30 days. The average time for one generation of "Papilio demoleus" to mature in the field ranges from 26 to 59 days. 

The female butterfly goes from plant to plant, laying a single egg at a time on top of a leaf which it holds onto with its legs, and flies off as soon as the egg is laid. The egg is round, light yellowish in colour, flattened at the base, smooth-surfaced and about 1.5 mm in height. Fertile eggs develop a small red mark at the apex.

The newly hatched caterpillar stays in the middle of the upperside of the leaf.

The pupa, which is rugose, stout and 30 mm in length, has two projections to the front on its head and also one on its thorax 

The adults fly in every month but are particularly abundant during and after the monsoons.



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