How long do butterflies live? According to most sources, Mourning Cloak butterflies (Nymphalis antiopa), which can live for 10-11 months, are thought to be the longest living butterflies in their range. I am always thrilled to see these darkly colored butterflies, which are known as “Camberwell beauties” in Great Britain, in the early spring and in the autumn.
Where are they the rest of the time? Mourning Cloaks spend part of the summer in aestivation, a hibernation-like state of inactivity to avoid the heat and lack of water. They are active in the fall, eating voraciously to fatten up and then overwinter as adults in another state of dormancy, often on the underside of fallen trees. In the spring, they reawaken to eat, mate, and die. In the north, there is often only a single brood annually, but in the south there may be two or more.
I spotted this butterfly on the first of October at Occoquan Bay National Wildlife Refuge. It looked to me like the butterfly was getting nutrients from the soil or possibly from animal droppings—unlike some butterflies, Mourning Cloaks do not rely on nectar from flowers as a primary source of nutrition.
© Michael Q. Powell. All rights reserved.
