If a Hercules Beetle does manage to survive the maggots, mites, raccoons, skunks, centipedes and spiders, it could live to a ripe old age of 18 to 20 months. The first 11 to 16 months are spent underground as eggs, instars and pupa, while the final three or four are spent above ground as adults searching for a mate.
The beetles undergo a complete metamorphosis cycle beginning with the egg stage, which lasts about a month, three larval stages that last from six months to a year, the two or three-week pupal stage in which the larva reorganizes an develops the hard exoskeleton and other adult parts, and the final adult stage that lasts until shortly after reproduction.
Adult beetles do not emerge from the soil until the spring. The females immediately begin releasing pheromones to attract males. After mating, the females burrow into the ground to lay eggs and start the process all over again.
Many people are apprehensive about touching these beetles because of their large front horns. In actuality, the only way that a Hercules beetle could hurt a person is by scratching them with the sharp claws at the end of each leg and even then it wouldn’t be because the beetle was malevolent but rather because it is scared.