What is the immobile form called that occurs in the life cycle of a flea?

The immobile form that occurs in the life cycle of a flea is known as the pupal stage. During this phase, the flea is encased in a cocoon, which is a protective covering that helps shield it from environmental factors and potential predators. In the pupal stage, the flea undergoes metamorphosis, transforming into its adult form.

Fleas lay eggs, which hatch into larvae that then form into pupae. The pupae can remain in this dormant state for some time, depending on environmental conditions such as temperature and humidity. Once conditions become favorable, the adult flea emerges from the cocoon to continue its life cycle.

The term "cocoon" refers specifically to the casing created by the pupae, but it is essential to distinguish between the cocoon itself and the pupal stage, which describes the life stage the flea is in when it is immobile and undergoing development. Understanding these stages is crucial for effective pest management strategies targeting fleas and their life cycle.