 Some moth species, including the wood tiger moth, convert resources to melanin in order to enhance their thermoregulation.As the wood tiger moth has populations over a large range of latitudes, it has been observed that more northern populations showed higher rates of melanization.In both yellow and white male phenotypes of the wood tiger moth, individuals with more melanin had a heightened ability to trap heat but an increased predation rate due to a weaker and less effective aposematic signal.