Insect and Spider Identification: Please ID ant/wasp-like flying insect, 0 by tomm38

tomm38 wrote:
i've seen this bug flying around indoors sometimes(i live near an atlantic forest, on the south of Brazil), it looks like an ant/wasp/fly mixture, it has red eyes and this short snout-like thing in its head. it's rear pair of legs are long, the middle ones are a little shorter and the front legs are smaller, thinner and they have a white color in their tip. it flies really fast.
sorry for the bad quality picture (i took it with my cellphone), i've also added a video and a sketch i made.
http://www.youtube.com/watch?v=HVMo6tyEpiQ
http://i.lulzimg.com/a009d847ee.png