Honey bee (Apis mellifera) is an insect species living in colonies. In the colony there is usually one queen, thousands of workers and during some parts of the year variable number of drones. New colonies are produced by swarming. The colony lives in a nest which in nature is usually located inside a hollow tree. In the nest there is a series of vertical combs build from wax. On two sides of the combs there are hexagonal cells. Larval development of bees occurs in the cells. They are also used for storing honey and bee bread. The main food of honey bees are pollen and nectar collected from flowers. Originally honey bees occurred in Africa, Europe (except northern part) and Near East. They were introduced by man to Asia, both American continents and Australia. Domesticated honey bees are kept in hives. They are important economically as pollinators of crops and producers of honey.