flight


flight

A generation of adults. Many species are widely distributed across North America. In the north, these species may have only a single flight (one generation) each year, and the southern residents have two flights. When there is only one flight, adults emerge in spring or summer, mate, and deposit eggs. Depending upon the species, the caterpillars may complete their development in the fall, overwinter as pupae, and emerge in the following spring or summer. Alternatively, they may overwinter as caterpillars, resume development in early spring, then have a brief pupal stage and emerge as adults in spring or summer. In areas where there are two well-spaced flights annually, say April-May and July-August, it means that the adults that emerge in spring lay eggs that complete the entire life cycle by July-August, and that the July-August flight produces the overwintering generation.