The thousandth leg has two pairs of legs per segment (except the first segment behind the head, and only slightly after that with just one leg). The millipede is the Order of invertebrate members belonging to the phylum of Arthropoda.
The body of the millipede is a cylinder, the number of segments is about 25-100, each segment has only a pair of legs and each belly has five pairs of legs and two pairs of spiracles. These animals breed by laying eggs.