Clitellata

Clitellata is a class of segmented worms within the phylum Annelida, which includes earthworms and leeches. These worms are characterized by a distinctive belt-like structure called the clitellum, used during reproduction to produce cocoon-like compartments for their eggs and sperm. Clitellates have a simple body plan with repeated segments, and most are hermaphroditic, meaning they have both male and female reproductive organs. They play important roles in ecosystems, such as decomposing organic material and enriching soil fertility. Overall, Clitellata are vital, adaptable worms with a common reproductive feature that distinguishes them from other annelids.