How long does it typically take for a fly to develop from an egg to an adult?

The development time for a fly from egg to adult typically spans around 1 week, which aligns with the general life cycle of many common species of flies, such as houseflies. After laying eggs, these usually hatch within 24 hours, and the larvae (maggots) undergo several stages of development, known as instars, during which they feed and grow. This larval stage can last several days, after which they pupate. The pupal stage usually lasts about a week, leading to the emergence of the adult fly. Therefore, the overall development from egg to adult is commonly completed in about a week under favorable conditions, making it the correct choice for this question.

Understanding the life cycle of flies is crucial for pest control efforts, especially for managing infestations effectively, as knowing their rapid growth can inform timely interventions.