''Californiulus'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of cylindrical

millipede Millipedes (originating from the Latin , "thousand", and , "foot") are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derive ...

s containing six species native to the western United States.

Description

Species of ''Californiulus'' exhibit two major color patterns. Some are characterized by a broad stripe of light brown, orange or yellow extending down the dorsal surface, while others are banded in light brown against a dark gray or black base color. Adult individuals range from long and up to 4.7 mm wide.

Distribution

The constituent species of ''Californiulus'' range from northern

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

south to

Death Valley Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. It is thought to be the Highest temperature recorded on Earth, hottest place on Earth during summer. Death Valley's Badwat ...

, California, and one species occurs separate from the others in a range from extreme eastern Oregon to Montana.

References

Julida Millipedes of North America {{Millipede-stub