北美大陆上生活着一种非常著名的蝴蝶——帝王蝶。这种蝴蝶的双翅展开约12厘米,因此被人们叫做“帝王蝶”。帝王蝶的主要食物是乳草的花蜜,吸食完乳草的花蜜后,它们就把卵产在乳草宽大的叶子上。乳草的怪味道能阻止其他动物捕食帝王蝶的幼虫。帝王蝶的卵孵化的幼虫有3厘米长,食量很大,它破壳后就把乳草的叶子当馅饼,张口就咬,叶子被咬的地方会流出大量乳白 North American continent is living a very famous butterfly - monarch butterfly. This butterfly’s wings spread about 12 cm, so it is called “Monarch butterfly ”. Monarch butterflies’ main food is nectar of milkweed. After eating nectar of milkweed, they lay eggs on the broad leaves of milkweed. The weird taste of milkweed can prevent other animals from feeding on the monarch butterfly larvae. Monarch butterfly egg hatching larvae 3 cm long, food intake is very large, it is broken after the shell put the leaves of milkweed as pie, mouth open on the bite, the leaves will be bite a lot of milky white