Earwigs are abundant and can be found throughout the Americas and Eurasia. The common earwig was introduced into North America in 1907 from Europe, but tends to be more common in the southern and southwestern states.[6]:739 The only native species of earwig found in the north is the spine-tailed earwig (Doru aculeatum),[7]:144 found as far north as Canada, where it hides in the leaf axils of emerging plants in southern Ontario wetlands. However, other families can be found in North America, including Forficulidae (Doru and Forficula being found there), Labiidae,Anisolabididae, and Labiduridae.[8]Wikipedia.org
Unfortunate victim of a feeding earwig
Earwigs are harmful and poisonous, they might sting, which feels like a small pinch, but is actually an attempt to feed. Shown above is a victim of such an attack. Bites from a feeding earwig are often small unless delivered by the male of the species.
Male Earwig
The male earwig is much larger than the female earwig and is also known for being aquatic. As the earwig hatches and changes from larval form into the adult form the male species will seek out a source of water to continue its development and also allowing it to feed upon much larger prey such as otter, beaver, seal, and even the occasional human swimmer. Many bites received by swimmers while in natural water bodies are often falsely attributed to turtles, large predatory fish such as northern pike, muskellunge, shark, or barracuda; that are actually the result of an attack by a male earwig. Their carapace is very smooth and they camouflage themselves at most times in a better attempt to catch prey.
Only some species of earwigs possess wings and are able to fly, so in order to move long distances they will infect a bird's brain to travel to visit friends or family for the holidays.
During the winter months an earwig family must remain 6-7 feet underground in order to survive. It is recommended that if you keep them as pets to find an underground home for your pet earwig in the winter such as a warm basement.