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.

• 少数几种蝴蝶幼虫，含有鸟、蜘蛛等捕食类天敌不敢吃的毒，如大白斑蝶。幼虫身上的毒则来自他们所吃的有毒植物。