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棉铃虫幼虫的消化道粗短,成虫的消化道细长;预蛹期消化道则收缩;蛹期则是幼虫消化系统解体、成虫消化系统形成的一个过渡期;成虫消化系统的基本构造在蛹期第5d形成。
The larvae of the bollworm larvae have shortened digestive tract, the digestive tract of the adult is slender, the digestive tract is contracted during the pre-pupal stage, and the digestive system disintegrates at the pupal stage, and the digestive system of the adult is formed. The basic structure of the adult digestive system is in the pupae The formation of the first 5d.