Xystocheirini is a tribe of

flat-backed millipede Polydesmida (from the Greek ''poly'' "many" and ''desmos'' "bond") is the largest order of millipedes, containing approximately 3,500 species, including all the millipedes reported to produce hydrogen cyanide (HCN). Description Members of the o ...

s in the family

Xystodesmidae Xystodesmidae is a family of millipedes. Its members often have very small distributional areas, with many species only known from a single locality. They are found across the northern hemisphere, with peak diversity in the Appalachian Mountains, ...

. There are about 5 genera and more than 40 described species in Xystocheirini.

Genera

These five genera belong to the tribe Xystocheirini: * '' Anombrocheir'' Buckett & Gardner, 1969 * ''

Motyxia ''Motyxia'' is a genus of cyanide-producing millipedes (collectively known as Sierra luminous millipedes or motyxias) that are endemic to the southern Sierra Nevada, Tehachapi, and Santa Monica mountain ranges of California. Motyxias are blind ...

'' Chamberlin, 1941 * ''

Parcipromus ''Parcipromus'' is a genus of millipedes belonging to the family Xystodesmidae Xystodesmidae is a family of millipedes. Its members often have very small distributional areas, with many species only known from a single locality. They are found ...

'' Shelley, 1995 * ''

Wamokia ''Wamokia'' is a genus of millipedes belonging to the family Xystodesmidae Xystodesmidae is a family of millipedes. Its members often have very small distributional areas, with many species only known from a single locality. They are found acr ...

'' Chamberlin, 1941 * '' Xystocheir'' Cook, 1904

Genera

References

Further reading