noun
- A thickened, saddle-like band of tissue around the body of certain annelid worms (such as earthworms), used in reproduction and cocoon formation.
Usage: biology; plural: clitella or clitellar regions; also called clitellum (singular)
Examples
- The earthworm's clitella secretes mucus that helps form the protective cocoon for its eggs.
- During the breeding season, the clitella of the worm becomes more pronounced and active.
- Biologists identify mature earthworms by the presence of a visible clitella.
- The clitella plays a crucial role in the reproductive cycle of annelids.
- Under the microscope, the clitella appears as a distinct swollen region on the worm's body.