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Millipedes and centipedes are not insects. They are actually more closely related to lobsters, crayfish and shrimp. However, unlike their marine cousins, millipedes and centipedes are land dwellers. Millipedes are often called 1,000-legged worms or rain worms. They are wormlike, with rounded body segments that each bear two pairs of legs. The head is rounded with short antennae. Species can vary in length from less than 1 to 2 or more inches. They are typically light brown to black. Millipedes can climb walls easily and will often enter homes through foundation cracks above ground level.
They are typically found in moist habitats or areas with high humidity and are most active at night.