The giant house centipede, a common sight in basements and other damp areas. These intimidating insects have 15 pairs of legs and can move quickly. Some species grow up to 6" long. They do have the ability to bite which is similar to a bee sting if handled improperly. Centipedes feed on other insects such as spiders, flies, etc. Since they prefer a moist environment, it's best to run a dehumidifier in basements to deter many kinds of pests.