Millipede bodies are rounded or somewhat flattened. Their legs are short and movement is slow, and most species are less than 1 ½ inch long. Millipedes prefer to live in moist habitats and during the day occur underneath rocks, logs and other objects in contact with the ground.
Millipedes feed on decomposing organic matter, but will occasionally damage seedling plants by feeding on leaves, stems and roots. Millipedes are mostly active at night time.
Information courtesy of: https://texasinsects.tamu.edu/centipede-millipede/