Termites are social insects like ants, bees and wasps. Social insects live in large groups, share a nest and share important biological roles among individuals within a colony. In termite colonies, important biological roles are divided among physically distinct termites called castes. Termite castes include eggs, larvae, workers, soldiers, nymphs and reproductives. The percentage of the colony in each caste is regulated by chemical signals, which vary between different species and groups of termites.