Like many insect species, bees and wasps change drastically between different stages of life. These life stages are also called a complete metamorphosis. They pass through four life stages that include: egg, larva, pupa, and adult.
The first three stages occur in the brood cell of the nest (see Nesting) and it is not until the adult stage that it resembles its typical appearance.
During the egg stage, the bee/wasp resembles a small piece of rice or white sausage and remains in this form for 1 to 3 weeks before it hatches into a white grub-like larva.
During the larval stage, the larva grows quickly as it feasts on the provisions of pollen and nectar left by the mother in the cell. After a significant amount of rapid growth, the larva soon develops into a pupa and remains relatively dormant for 8 to 9 months.
During pupal stage, the pupa will slowly develop into its recognizable adult form while encased in a protective outer layer. Once developed, the adult bee or wasp will emerge from this outer layer and will carry on its life as a fully grown adult.