I live in the Pacific coast of South America. Seems to have two wings, like a wasp's. The "tail" is a bit bulky but is only connected to the rest of the body by a thin part. It's black overall. The antennae in the photo are downwards but they just spring normally to the front...
Actually I took photoshop to help me find this little guy, Ensign Wasp(Evaniidae)
My Photoshop research: