These have got to be, gram-for-gram, the loudest animals on the planet. I love 'em. 
http://www.naturespic.com/wildlife2/9453.html
That's what the little (actually BIG!) buggers look like, and right now, there's about a BiJillion of 'em in the trees all over town. In one location, Harper Avenue in Hagley Park, where there's about 20 acres of mature Oak trees, they are so loud that quite literally, you can't hear yourself talk underneath the trees!
The ground is *covered* in the shed skins of the nymphs, and the birds are so full of them that they can't be bothered even chasing them!
Our cicadas are not the "periodical" variety - you know - the ones that all live underground (sucking tree sap from roots) for 13 or 17 years, and then all emerge at once. Ours are the variety for which 8-12% of them emerge every year, leaving finger sized holes in the ground from whence they came.
They're very pretty insect - and most are about 1½ inches long (3.5cm) and these ones are bright green with black bits. The wings, when they catch the sunlight they produce rainbow effects like see-through CD-ROMs!
Anyway - I like 'em, and I wish they were around all year long. I love listening to 'em in the evening while it's still warm. Mostly though, it cools down in the evenings here, and they tend to shut-up around 10-11pm - so it's not like they play their music through the night.




They're like wasps, only they sting Cicadas, not you. The poison paralyzes the Cicada. You'd see a Cicada flying around, and then a Cicada Killer would swoop in, latch onto the Cicada and sting it, and then hang on for the ride. They'd fly around like crazy for a little while, and then the poison would take over and they'd go crashing to the ground. 
i didn't eat it.