The caterpillar of the Julia Longwing Butterfly has red colours to warn of its distastefulness/toxicity and also has vicious, barbed,
black spikes as a further deterrent to potential predators. Like other Longwing family caterpillars,
it feeds on Passion Flower vines to give it the toxicity, carried through to its chrysalis and adult stages.
Julia longwing butterfly emerging from its inconspicuous chrysalis.