Ommatoiulus moreletii (spelt moreleti in older publications), commonly known as the Portuguese millipede, is a herbivorous millipede native to the western Iberian Peninsula where it shares its range with other Ommatoiulus species. From here, it has spread by international commerce to a number of new localities. This species was accidentally introduced into Australia without its natural enemies and has since become an invasive pest. This species has also been introduced into New Zealand. A number of methods have been developed to manage this millipede.

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