I live in southern Brazil. This afternoon I found a clump (20, 30?!) of these bugs all together right above my window. Black with a red stripe, and its mouth looks like it's for biting. I'm from Italy so I'm not sure which bugs here bite and which don't.
I uploaded seven pictures of it on imgur for identification: http://imgur.com/V3s44xp,5jEDcI3,xr1jvpU,P0M8k1A,vbLTZez,vfJWtV2,xfQTOPq