What benign of insect is this?

It squeaks when you poke it, has long, color-alternating antennae, has a small twig-like item on its rear, and it can fly. Its wings are not veiny, and seemingly smooth close to a firefly. It has a dusty greyish-brown color in a splotchy guide and its abdomen has 4 lines on the bottom.
I own tried various insect identification sites, as I currently own the bug in a small ziploc bag, but I be not successful.

Answers:    It is a cacidas..In Texas where I was raise we also called the locusts..but in true reality a locusts is a grasshopper...here is a picture..they also turn brown instead of the bright green here

http://www.whatsthatbug.com/cicadas.html

http://www.whatsthatbug.com/cicadas_2.ht...
How long is it?

try looking on:

http://www.whatsthatbug.com/index.html
PROBABLY A locust... Good description but none of us are bug experts. Keep the bug in good condition and take a camera handy!
you need to send a picture sounds close to u have something creepy there
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