Most moths live for 2 to 11 months. This period of time consists of the entire life span from the larval stage to the adult state.
Eggs laid in the spring months tend to have a much shorter lifespan, and the adults emerge much quicker due to the warm temperatures. Eggs laid in the fall, however, tend to develop much slower, and it can take several months before the adult emerges. Once the adult emerges, they live for an average of a few weeks to 9 months. On rare occasion, specific species can live a few months longer as adults.