Julidae is a family of millipedes in the order Julida, containing more than 600 species in around 20 genera. Its members are largely confined to the Western Palaearctic, with only a few species extending into the Oriental and Afrotropical ecozones. They are united by a characteristic form of the mouthparts, and are classified in the superfamily Juloidea of the order Julida, alongside the families Trichoblaniulidae, Rhopaloiulidae and Trichonemasomatidae.

Classification

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Allajulus
Anagaiulus
Anaulaciulus
Brachyiulus
Calyptophyllum
Catamicrophyllum
Cylindroiulus
Dolichoiulus
Enantiulus
Haplopodoiulus
Heteroiulus
Julus
Kryphioiulus
Leptoiulus
Mammamia
Megaphyllum
Nepalmatoiulus
Ommatoiulus
Ophyiulus
Pachyiulus
Pacifiiulus
Tachypodoiulus
Titanophyllum
Thyrophygus
Unciger
Select species

Brachyiulus pusillus
Cylindroiulus punctatus
Tachypodoiulus niger
Ommatoiulus moreletii
Megaphyllum unilineatum

source - Wikipedia