蛹壳分为“被蛹”和“围蛹”，是昆虫羽化后剩下的外壳。比如蝉羽化时所蜕去的壳称为“蝉蜕”，主产于江苏、浙江、河南、河北、山东等地。黑蚱喜栖息于杨、柳、榆、槐、枫杨等树上。味甘，性寒。归肺、肝经。功效疏散风热、利咽、透疹止痒、退翳明目、祛风止痉，中医供药用。
举例来说，我发现当瓢虫出生时，它们从蛹里面出来时壳是橙色的，软的，湿的。
For instance, I discovered that when ladybugs are born, they come out of the pups and their shells are orange, soft, and damp.
纤维或类似纤维材料的保护壳，由蛾或其他昆虫的幼虫做成，作为其蛹阶段的覆盖物。
A protective case of silk or similar fibrous material spun by the larvae of moths and other insects that serves as a covering for their pupal stage.
正在养肥的幼虫变成有趣的毛虫，然后产生了一个坚固的保护壳裹在它们周围这样就进入了蛹的阶段。
Fattening larvae become juicy colorful caterpillars then create a hard protective case around themselves as they enter the pupa stage.
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