Size: The common North American millipede may be anywhere between 1½ to four inches long. Millipede bodies are elongated, rounded, and cylindrical.
Color: Brown, dark brown-red, or black. Legs may appear lighter in coloration than the main body. The North American millipede has distinctive red, yellow, or pink edges outlining each body segments.
Markings. The North American millipedes’ distinctive, colorful edges give the millipede a black-and-red “ringed” or banded appearance. Other species may not have the same banded appearance across their entire bodies, but most have some kind coloring to mark their edges or legs.