Female Aedes aegypti can lay over 100 eggs each time. Female mosquitoes lay the eggs near the surface of the water. Often, they deposit the eggs in two or more containers. Eggs are black and glossy and can look like dirt or coffee grounds.
**Eggs can be abandoned for several months in a dry container and still hatch as soon they come into contact with water. This is one of the factors that makes their control difficult.**
Pupae are also aquatic and move fast in the water. They are dark in color and have a coiled up body. The pupa does not feed, it only breathes and finalizes it development. In approximately 2 days a change occurs inside of the pupa, and it transforms from the aquatic stage to the terrestrial stage and becomes an adult mosquito.