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Hi Jorge.
Nemopoda has strong seta on cx2, which is almost never visible on photo.
But you fly has too thin abdomen waist for Nemopoda. In addition on your photo is clearly visible 2dc (Nemopoda has 1dc).
So, it is the same case as in your:
http://www.diptera.info/forum/viewthread.php?forum_id=5&thread_id=4111&pid=18186#post_18186
But I think that this fly (color and f1 shape) looks more like Australosepsis niviepennis.
Nikita