This butterfly blends in with the tree, and is less likely to be eaten by predators.
Isolation & Speciation
The butterflies started off brown but slowly started changing color and ended up blue. Now the butterfly cannot camouflage.
Oh no, the butterfly had a mutation, which occurred it's wings to be a blue color! The Brown butterfly is more likely to survive because it camouflages with the tree. But on the other hand, the blue butterfly is less likely to survive because it cannot camouflage to the tree, leaving it to be seen by its predators.
Behavioral isolation affects this butterfly because of appearance. If there is a brown butterfly and a blue butterfly, they will not mate because they have different appearances, thus showing behavioral isolation. These butterflies are not able to reproduce with each other therefore new species form. This process then shows speciation.
OH NO! A hurricane enters the butterflies environment, destroying the trees and the wings of all the butterflies. This leaves the butterflies broken and now the butterflies aren't able to go anywhere and is left to die.
Over time paleontologists have found many butterfly fossils. The color of the butterflies are still different, but paleontologists can tell that the butterflies are different species because of the color. They have noticed that the anatomy of the butterflies are very similar.