Graphiphora augur
The Soothsayer 
  
The moth often appears to be almost uniformly dark grey, with a small 
  but conspicuous black spot right in the middle of the forewing. When illuminated 
  and viewed from just the right angles, however, a recognizable pattern of markings 
  can be seen. In particular, the black spot is seen to be a smudge just outside 
  the concave waist of the reniform stigma. In spite of its scientific and English 
  names, I do not know what skills it has in foretelling the future.