challenge: What is distinctive about the forewing of Zygaena rhadamanthus?
  
  A. It has 6 red spots, with the 2., 3., 4., and 5. edged with black at the proximal and distal sides
  B. It is completely transparent and glossy black
  C. It has a single large red spot in the center
  D. It has 6 black spots
  Answer: 