You guessed it! Cicada adult emerging from nymph shell!

Photo by my brother Jack in St. Joseph, MN: The adult cicada is emerging from the shell in which it lived as a nymph. (Down south they sometimes call them dry flies, because of the shells they leave behind.) After they hatch they live in the ground as a nymphs, subsisting on root juice. Most cicadas go through a life cycle that lasts from two to five years. Some species have much longer life cycles, e.g., such as the North American genus, Magicicada, which has a number of distinct "broods" that go through either a 17-year or, in the American South, a 13-year life cycle. These long life cycles are an adaptation to predators such as the cicada killer wasp and praying mantis, as a predator could not regularly fall into synchrony with the cicadas. Both 13 and 17 are prime numbers, so while a cicada with a 15-year life cycle could be preyed upon by a predator with a three- or five-year life cycle, the 13- and 17-year cycles allow them to stop the predators falling into step.