According to Rutgers University, stink bugs typically live for six to eight months. Michael Raupp, an entomologist and college professor, believes that stink bugs live even longer. According to Raupp, stink bugs in the New Jersey area often live for one generation, but, in parts of China, five generations are often thriving in a single season.
Stink bugs seem to have an extended lifespan because they enter a hibernation phase in the winter known as diapause. During this phase, stink bugs do not feed nor reproduce. In spring, they re-emerge, and the females begin to reproduce again.
Regardless of the exact time span, experts agree that stink bugs live a long time. They do not grow old as quickly as other insects, and they do not have many predators. The type of stink bug that flooded Maryland in 2010 and spread across the U.S. was of an Asian variety. Known as the brown marmorated stink bug, it arrived in the U.S. via an overseas shipment and most likely left its natural predators behind. Some predators, such as predatory stink bugs, assassin bugs and two egg parasitoids, do prey on marmorated stink bugs, but because these predators eat other bugs as well, they are not enough to control the stink bug population.