Noun
large red-and-black European moth; larvae feed on leaves of ragwort; introduced into United States to control ragwort
Source: WordNetThese toxic species, such as the Cinnabar moth (Tyria jacobaeae) and monarch ( Danaus plexippus ) caterpillars, usually advertise themselves with the danger colors of red, yellow and black, often in bright stripes (see aposematism ). Source: Internet