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Tibicen pruinosus
urban backyard
also called Green Annual Cicada, Dog Day Cicada, & Harvestfly
Thanks for the ID Bill Reynolds, I'd never heard of the scissors grinder cicada before!
Compare all three similar species in your area.
pruinosus - http://bugguide.net/node/view/6967
linnei - http://bugguide.net/node/view/32143
canicularis - http://bugguide.net/node/view/12461