A monophagous species, Queen Alexandra’s birdwing feeds only from the vine species Aristolochia schlechteri. This vine also plays a central role in reproduction, as the butterfly lays a single egg on the underside of one of the leaves. After some 11 to 13 days the caterpillar hatches and eats almost constantly, rapidly increasing in size (5). The vine contains a toxic substance which, although not poisonous to the caterpillar, makes the caterpillar distasteful to potential predators. This trait is advertised by the caterpillar’s bright, conspicuous colouration, but if consumed by a naive predator, the toxin may cause severe vomiting (6). The caterpillar’s rapid growth is accompanied by six moults, in which the caterpillar grows new skin and sheds the former, before forming a chrysalis, in which metamorphosis takes place over a period of some 40 to 45 days. Once emerged, the adult butterfly remains dependant upon the same vine, feeding from its flowers with an elongated proboscis (5).