This is a list of 80 genera in Xystodesmidae, a family of flat-backed millipedes in the order Polydesmida. [1] [2] [3] [4]
Data sources: i = ITIS, [1] c = Catalogue of Life, [2] g = GBIF, [3] b = Bugguide.net [4]
Polydesmida is the largest order of millipedes, containing approximately 3,500 species, including all the millipedes reported to produce hydrogen cyanide (HCN).
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, where one-third of the 300 or so species occur. They are particularly abundant in deciduous broadleaf forests in the Mediterranean Basin, Africa, Asia, Central and North America, and Russia. Information on basic taxonomy is scant for this family; for example, it is estimated that the genus Nannaria contains over 200 species, but only 25 were described as of 2006. By 2022, 78 species in Nannaria have been described.
Atopetholidae is a family of millipedes in the order Spirobolida. There are about 18 genera and at least 60 described species in Atopetholidae.
Cambalidae is a family of millipedes in the order Spirostreptida. There are at least 20 genera and 80 described species in Cambalidae.
Caseyidae is a family of millipedes in the order Chordeumatida. Adult millipedes in this family have 30 segments. There are about 7 genera and at least 40 described species in Caseyidae.
Conotylidae is a family of millipedes in the order Chordeumatida. Adult millipedes in this family have 30 segments. There are about 19 genera and at least 60 described species in Conotylidae.
The genus Nannaria, commonly known as twisted-claw millipedes, is a genus of millipedes in the family Xystodesmidae first described by Ralph Chamberlin in 1918. In 2022, entomologists Derek Hennen, Jackson Means and Paul Marek discovered and described 17 new species, which expanded the size of Nannaria to 78, making it the largest genus of Xystodesmidae.
Chonaphini is a tribe of flat-backed millipedes in the family Xystodesmidae. There are about 6 genera and 19 described species in Chonaphini.
Boraria is a genus of flat-backed millipedes in the family Xystodesmidae. There are about seven described species in Boraria.
Desmonus is a genus of flat-backed millipedes in the family Sphaeriodesmidae. There are about 10 described species in Desmonus.
Rhysodesmus is a genus of flat-backed millipedes in the family Xystodesmidae. There are at least 90 described species in Rhysodesmus., ranging from El Salvador to the Southern United States.
Xystocheirini is a tribe of flat-backed millipedes in the family Xystodesmidae. There are about 5 genera and more than 40 described species in Xystocheirini.
Sigmoria is a genus of flat-backed millipedes in the family Xystodesmidae. There are more than 40 described species in Sigmoria.
Aniulus is a genus of millipedes in the family Parajulidae. There are more than 20 described species in Aniulus.
Eurymerodesmus is a genus of flat-backed millipedes in the family Eurymerodesmidae. There are more than 30 described species in Eurymerodesmus.
Rhinotus is a genus of millipedes in the family Siphonotidae. There are at least 20 described species in Rhinotus.
Cambala is a genus of millipedes in the family Cambalidae. There are about 18 described species in Cambala.
Sigmoria nigrimontis is a species of flat-backed millipede in the family Xystodesmidae. It is found in North America.
Rhachodesmidae is a family of flat-backed millipedes in the order Polydesmida. There are more than 20 genera and at least 80 described species in Rhachodesmidae.
Chonaphe is a genus of millipedes belonging to the family Xystodesmidae.