poke it, see if it make your finger smell lol.. kind of looks like a shield bug/stink bug.. There are many different varieties of em..
I would freak THA FUCK OUT if I saw that in my house. That thing would be dead AS FUCK in about .2 seconds lol
According to wiki their fangs can draw blood, and they have a last ditch anal spray similar to a skunk. You should definatly put it in a jar and fuck with it.
I love trying to identify things like this. It almost looks like a Cicada, but the head isn't right. Approximately how big is it, and could you possibly take a sharper picture? Edit: Also where do you live?
Dude wen i find bugs like that i rapture them, bring em inside, rip there wings off and stick shit between their fangs and make it bite. I kno its fucked up