cicada emerging from shell 3 - magicicada

american antennae buckling bugs cicada cicadas cicadoidea dark depend depending drum-like emerge emerged emergence emerging empty evolved exceptionally exclusively eyes fingertip front genus hemiptera insects intervals leaf lives location loud magicicada membranous mysterious newly nicely north nymphs perched periodical predator predators predictable produced prominent rapid remaining satiate set shell shells short silhouette small song species spend striking superfamily survival sustenance synchronization threaten true tymbals unbuckling underground unusual upsidedown wide wings years