Anthroleucosomatidae is a family of millipedes in the order Chordeumatida. These millipedes range from 3.5 mm to 28 mm in length.[1] Adult millipedes in this family have 26, 28, 30, or 31 segments (counting the collum as the first segment and the telson as the last).[2][1] This family includes Metamastigophorophyllon martensi, notable as the only chordeumatidan species with 31 segments.[2] There are about 38 genera in Anthroleucosomatidae.[3][4][5]