Australian chameleon grasshopper, Kosciuscola tristis
The Australian chameleon grasshopper has the unusual property of changing color. At low temperatures, males are black. At temperatures above 25C, they turn a bright blue in a process that takes about 30 minutes. If the temperature is lowered to 10C, they revert to the black color in a process that takes 5 hours. How do they change color?
The epidermal cells of the male grasshoppers contain two types of granules. The larger granules are…
Source: Living With Insects Blog