Arthrosphaeridae is a family of giant pill millipedes that are found in Madagascar, the Western Ghats of India, and Sri Lanka.

The largest pill-millipede in the world, Zoosphaerium neptunus (Butler 1872) belongs to this family and is known to swarm at certain times of the year.

[1] The first segment of the anterior telopods have a stridulatory organ known as a "harp" and this has one to ten ribs.

The anal plate on the female is enlarged and has 1-12 ribs while the male anal shield has no special sclerotized notch as seen in other families.

The segments of the antenna are oval or cylindrical.