Paeromopus paniculus is a species of millipede endemic to the Sierra Nevada mountains in the United States state of California. Reaching up to 16.5 centimeters in length, it is the longest known millipede in North America.
Californiulus is a genus of cylindrical millipedes containing six species native to the western United States.
Paeromopus angusticeps is a species of millipede found in the U.S. state of California. It occupies the largest geographic range of all four species of Paeromopus, occupying much of Northern California in a large arc extending from Monterey County on the central coast, north along the Coast Ranges to Humboldt County, and descending along the Cascades and Sierra Nevada range of eastern California. P. angusticeps is largely absent from California's Central Valley.
Nannaria ohionis is a species of flat-backed millipede in the family Xystodesmidae. It is found in the Midwestern United States.
Nannaria terricola is a species of flat-backed millipede in the family Xystodesmidae. It is found in the Great Lakes region of the United States.
Semionellus placidus is a species of flat-backed millipede in the family Xystodesmidae. It is found in North America.
Semionellus is a genus of flat-backed millipedes in the family Xystodesmidae. There are at least three described species in Semionellus.
Chonaphini is a tribe of flat-backed millipedes in the family Xystodesmidae. There are about 6 genera and 19 described species in Chonaphini.
Selenocheir is a genus of flat-backed millipedes in the family Xystodesmidae. There are at least three described species in Selenocheir.
Thrinaxoria lampra is a species of flat-backed millipede in the family Xystodesmidae. It is found in North America.
Thrinaxoria is a genus of flat-backed millipedes in the family Xystodesmidae. There are at least three described species in Thrinaxoria.
Boraria infesta is a species of flat-backed millipede in the family Xystodesmidae. It is found in North America.
Montaphe is a genus of flat-backed millipedes in the family Xystodesmidae. There are at least two described species in Montaphe.
Rhysodesmus texicolens is a species of flat-backed millipede in the family Xystodesmidae. It is found in North America.
Furcillaria aequalis is a species of flat-backed millipede in the family Xystodesmidae. It is found in North America.
Furcillaria is a genus of flat-backed millipedes in the family Xystodesmidae. There are at least four described species in Furcillaria.
Chonaphe is a genus of millipedes belonging to the family Xystodesmidae.
Tubaphe is a genus of millipede in the family Xystodesmidae with a single described species, Tubaphe levii. The genus was erected by Nell B. Causey in 1954.
Chonaphe armata is a species of Xystodesmid millipede found in the Pacific Northwest of North America. The species was first described as Polydesmus armatus by O. Harger in 1872 and was later moved to the new genus Chonaphe, for which it is the type species, by O. F. Cook in 1904.
Selenocheir arcuata is a species of Xystodesmid millipede found in Northern California. The species was first described by Rowland M. Shelley in 1994 based on samples collected by C. Smith, J. Clover, and F. Ennik in 1972.
