Thanks for viewing ! Comments are welcome... Latin name Tyria Jacobeae. This is caterpillar of the cinnabar moth. The bold black and yellow stripes are a warning of retribution as bold as those of a wasp. Cinnabar caterpillars feed on the leaves of ragwort and sometimes groundsel and coltsfoot. If they survive and pupate, they eventually emerge as black and red adult moths. They are as conspicuous and as poisonous as the caterpillars. The source of the poison is the ragwort, which produces alkaloids in its leaves. Ragwort is poisonous to horses but not to sheep