' I found a cicada shell! It's just a shell of its former self!' -New Leaf Then it just leaves this shell of its former self hanging right there! Awful manners, really.and awfully terrifying too.' Capture quotes 'Cicadas! The nerve! Not only are they loud, they leave their cicada shells lying about! When it's time for a cicada nymph to turn into an adult, you see, it clings to a tree and sheds its exoskeleton. When either donating to the museum or selecting 'Tell me more about this!', Blathers the curator will say (with abhorrence): Collecting the shells will tell you how many and what kind of cicadas inhabit a certain area.' In New Horizons It's possible to find out the species of cicadas just be looking at these shells. 'Cicada larvae emerge from the ground in the evening and molt on trees, leaving behind empty shells. In New Leaf, an information board in the bug exhibit will list information about this bug.