Stock photography, photos: 17 Year Periodic Cicada Stock photos of Periodical cicada also referred to as 17 year cicada emerges from the ground and sheds its exoskeleton every seventeen years after feeding as a nymph on sap in tree roots. Their loud staccato whine can be heard from tree tops once they emerge. The freshly emerged cicadas are a delicacy for some while still soft. Photograph: © Dan Creighton Click for a larger image and more information Keywords associated with this stock photo: beast, Magicicada, periodical cicada, beasts, animal, bug, creature, cicada, zoology, 17 year cicada, invertebrate, Insect, wildlife