"E. tiaratum" typically reproduce through sexual reproduction and produce eggs that hatch four months later. When no males are present in the population, this stick insect exhibits parthenogenesis instead. Eggs laid without fertilization take up to nine months to hatch and produce only females. In either cases, the female "flicks" her eggs, swinging her tail, up to several feet to land on the forest floor. These eggs must be kept relatively cool - under 25 °C - or they are unlikely to hatch.