lepidopterin

例句：

1. 1. The butterfly pupa is the stage of a caterpillar before it emerges as a flying insect.
   蝴蝶蛹是一只毛毛虫在变成飞虫之前的阶段。
2. 2.During the winter months, many caterpillars pupate in their chrysalises to protect themselves from harsh weather conditions.
   在冬季，许多毛毛虫会在它们的茧中蛹化，以保护自己免受恶劣天气的影响。
3. 3. The caterpillar pupa is a crucial stage for the development of the caterpillar's exoskeleton and muscles.
   毛毛虫的蛹期对于毛毛虫外骨骼和肌肉的发展至关重要。