Ommatoiulus

Ommatoiulus is a genus of millipedes in the family Julidae.

The taxonomy of the genus has had a complicated history. As it stands now, there are approximately 60 described species, but this is likely to change. At least 10 new species were described in 2012, and those just from Spain. Six new species were described from Portugal in 2017. There are many millipedes known to belong to this genus that do not yet have official names. thumb|right|Ommatoiulus sabulosus This genus is distinguished by the position of the ozopores, the shape of the ocelli and the gonopod legs, the presence of accessory claws on the juveniles, and the presence in males of a large fovea, a cavity where sperm are stored.