Julid
Guides
Californiulus yosemitensis
Yosemite Millipede
Californiulus yosemitensis is a large cylindrical millipede in the family Paeromopodidae, reaching up to 11 cm in length. It is distinguished by a broad yellow or orange dorsal band with a central black stripe running the length of the black body. The species is the most widespread member of its genus, occurring across the Sierra Nevada and adjacent ranges from southwestern Oregon to Kern County, California. It was described by Ralph Vary Chamberlin in 1941 from specimens collected in Yosemite National Park.
Litiulus alaskanus
Litiulus alaskanus is a small julid millipede and the sole species in the monotypic genus Litiulus. It is endemic to the northeastern Pacific region, where it inhabits old-growth rainforests. The species is notable for its specialized diet of fungal fruiting bodies and its apparent physiological tolerance for drier conditions than most sympatric millipedes.
Parajulidae
Parajulid Millipedes
Parajulidae is a family of millipedes in the order Julida, distinguished by male genital morphology: males possess greatly enlarged first pairs of legs and externally exposed gonopods. The family occurs predominantly in North America with extensions into Central America and East Asia, representing one of the most widely distributed millipede families in the Western Hemisphere. The genus Oriulus venustus alone covers three-fourths of the continental United States and adjacent southern Canada, making it the most broadly distributed North American diplopod known.
Ptyoiulus
Ptyoiulus is a genus of millipedes in the family Parajulidae, established by Cook in 1895. The genus contains approximately seven described species distributed in eastern North America. Species within this genus are cylindrical millipedes characterized by features typical of the Julida order. The genus is taxonomically placed in the subfamily Ptyoiulinae.