The scales of a Monarch butterfly's wing play a very important part in the butterfly's ability to carry on the most essential functions of it's existence. They must be aerodynamic, able to shed water and protect the fragile structure of the wing. All while being light enough so as to not hinder the ability of the Monarch to fly thousands of miles in order to overwinter in locations warm enough to ensure their survival.
The scent producing organ on each hind wing of a male Monarch shows as a black spot on a specific vein on these wings and itself is covered by protective scales similar in shape to other dark scales on the Monarch wing.
The pheromone producing scent pouch is a multi colored organ used to attract a female for the purpose of mating.
