The caterpillars feed on various native plants of especially the family Rutaceae, but have also taken to the leaves of cultivated citrus trees.

Pupa will amerge in September Adult butterflies have black and yellow markings with red and blue eyespots.

As with most butterflies, various predators, parasitoids and diseases attack Papilio demodocus, so that integrated pest management is generally the most rational approach to control of infestations, paying due attention to avoiding destruction of the populations of enemies.

In particular parasitic wasps in the family Encyrtidae, such as some species of the genus Ooencyrtus develop in Papilio eggs.

Male butterflies produce pheromones from different structures, such as that of the anal fold of the hindwing,[5] that cause the females to perform the appropriate response.

She can do so by either avoiding his approach or, if she lands, she will flap her wings quickly and deliberately all while raising her abdomen until the male flies away.

When the female reaches the lek, she changes her behavior so that she helps the males to detect her by performing a long and obvious circular flight.

[7] In Papilio glaucus, that which is of the same genus of this species, the lack of male-male competition, strong rapid flight, dispersed abundant food, and oviposition sights helped to support the idea of mating system based on polygyny.

Therefore, a male is considered more fit with a larger ejaculation, given that he allows his offspring to feed so that his own genes may be passed on efficiently.