For More Good Information Worms that are sexually mature have a prominent 'band' around their body, called the 'clitellum'. Most worms are hermaphrodites, which means that from each mating session, both worms will produce a capsule.
Reproductive material is exchanged.
When the worms seperate, a ring of mucus material forms at the clitellum of each worm. The worm will then wriggle backwards, and the mucus ring slips off over the head. All the necessary reproductive material is sealed inside. The worm capsule, when first deposited is soft and milky white. This quickly hardens and turns a light lemon colour.