Cicada On Closed Fist 2 - 13 Year 17 Year - Magicicada. The Cicadas Are A Superfamily, The Cicadoidea, Of Insects In The Order Hemiptera (True Bugs). Cicadas Have Prominent Eyes Set Wide Apart, Short Antennae, And Membranous Front Wings. They Have An Exceptionally Loud Song, Produced In Most Species By The Rapid Buckling And Unbuckling Of Drum-Like Tymbals. One Exclusively North American Genus, Magicicada (The Periodical Cicadas), Which Spend Most Of Their Lives As Underground Nymphs, Emerge In Predictable Intervals Of 13 Or 17 Years, Depending On The Species And The Location. The Unusual Duration And Synchronization Of Their Emergence May Reduce The Number Of Cicadas Lost To Predation, Both By Making Them A Less Reliably Available Prey (So That Any Predator That Evolved To Depend On Cicadas For Sustenance Might Starve Waiting For Their Emergence), And By Emerging In Such Huge Numbers That They Will Satiate Any Remaining Predators Before Losing Enough Of Their Number To Threaten Their Survival As A Species.

KEYWORDS

13yr 17yr american antennae bugs cicada cicadas cicadoidea closed cover depending dozens drum-like emerge emerged emergence emerging empty evolved excellent exceptionally eyes fist food-source genus great green grey ground hemiptera insects intervals leaf location loud magicicada membranous mysterious nature newly north nymphs perched periodical predator predators prominent rapid satiate shells short song sparroweating species stem striking superfamily survival sustenance synchronization true two tymbals unbuckling underground unusual wide wings year years