Social insects are insects that live together in colonies or communities. There may be millions of individual insects in one community. Bees, wasps, ants and termites are examples of social insects. Social insect has an organization based on cast system and different casts of the insect carry different duties within the colony. Common characteristics of all social insects are:
They form huge colonies.

• Genetically related but reproductively confined to a single queen and the males that fertilize her.
• Their behavior is controlled by a chemical substance called pheromones.
• There is co-operation in caring for the offspring
• Show division of labor.