The larvae of a few species contain poisons, which come from the poisonous plants they eat and which prove highly unappetizing to natural enemies like birds and spiders.
少數幾種蝴蝶幼蟲，含有鳥、蜘蛛等捕食類天敵不敢吃的毒，如大白斑蝶。幼蟲身上的毒則來自他們所吃的有毒植物。