The beetle Clytus arietis with warning colours. This leaf beetle is quite harmless, but mimics the colours of a wasp. The bright yellow and black body of Clytus makes it deliberately conspicuous to its predators. Poisonous or toxic animals display warning (aposematic) colours to indicate that if attacked, they will strike back in some way. By mimicking these warning colours, Clytus arietis acquires protection by resembling another insect more dangerous than itself.