Eurytides marcellus Life cycle
They are sometimes laid on the tree trunks. The egg is pale green. After three days it turns an orange-brown color. It turns dark gray just before hatching. Young caterpillars are black. Older caterpillars have two different color forms. The more common form is green. It has yellow and white stripes. The more rare form is black with white and orange stripes. The caterpillar has a bad smelling, forked gland called an osmeterium. It is found just behind the head.