What is the life cycle of a mealworm beetle?

Meal worm's life cycle is 3-5 months. First it is a tiny white egg which will hatch in about 1-2 weeks. The next stage is a larva. It is a worm-like creature but only has 6 legs. It will stay in this stage for 3 - 4 weeks.Then it turns into a pupa. It is yellowish-brown. The mealworms are inactive at this stage. Finally it turns into a beetle. First the beetle is white, sowly turns brown, and then finally black. The beetle will eventually die and the life cycle will start all over again. A female can lay up to 500 eggs in her lifetime.