Semper's larva

例句：

1. 1. The caterpillars are the first stage of a butterfly's life cycle.
   毛毛虫是蝴蝶生命周期的第一个阶段。
2. 2. The caterpillars feed on leaves and pupate into chrysalises.
   毛毛虫以叶子为食，并在蛹中化成蛹。
3. 3.The caterpillars are an important food source for many birds and animals.
   毛毛虫是许多鸟类和动物的重要食物来源。