The Ruby Tiger Moth (like many moths) is much more interesting when it has its wings open. It has bright red underwings with black patches, plus a bright red body. They fly during the day as well as by night. They can be found in most habitats. The caterpillars feed on a variety of plants, including ragworts, heathers, dock and dandelion. Unlike many caterpillars, the colour of this pretty much exactly matches the colour of the adult moth.