This distinctive little tachinid really is beautiful, though the photos probably don’t do it justice. The thorax is dark and shiny with a slight purplish-blue sheen and yellow dusting anteriorly. The abdomen is shiny and very dark red-brown with faint grey dusting on tergite 3. The legs are all orange with 2 extremely large ad bristles on the mid tibiae.
EDIT (Monty Wood 26/9/2010): This is a Phosocephala sp.