Seeing a fast-moving insect dart across your floor can be unsettling. For many people, the immediate reaction is to eliminate it as quickly as possible. House centipedes, with their long legs and sudden movements, often trigger this response more than most household insects. However, before reaching for a shoe or insect spray, it may be worth reconsidering. According to entomologists and pest-control experts, house centipedes play a surprisingly beneficial role inside homes and are generally harmless to humans.
Understanding what house centipedes are, why they appear indoors, and how they actually help control other pests can change the way you view these often-misunderstood creatures.
What Is a House Centipede?
The house centipede (Scutigera coleoptrata) is a species commonly found in homes across North America, Europe, and parts of Asia. Unlike soil-dwelling centipedes, this species has adapted to indoor environments, where it can find shelter, moisture, and food year-round.
House centipedes are easily recognized by their elongated bodies, long antennae, and numerous legs, which can make them appear larger than they actually are. Adults typically measure about 1 to 1.5 inches in body length, though their legs extend their overall appearance.
Despite their intimidating look, house centipedes are not aggressive and generally avoid human contact.
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