platydesmida

Platydesmidans have a flattened body shape with lateral extensions (paranota) on each segment. They lack eyes, and have between 30 and 110 body segments. They measure up to {{convert|60|mm|abbr=on}} in length.{{cite web|title=Diagnostic features of Millipede Orders|url=http://fieldmuseum.org/sites/default/files/Identification_Table_1.pdf|work=Milli-PEET Identification Tables|publisher=The Field Museum, Chicago|access-date=25 October 2013}}

File:Brachycybe with eggs.JPG

While most millipedes feed on dead or decomposing leaf litter platydesmidans may be specialized to feed on fungi. Platydesmidans have also been studied with regard to parental investment, in that males of some species coil around eggs and young, a rare example of paternal care in arthropods. This behavior has been observed in species of Brachycybe from North America and Japan, and Yamasinaium from Japan, all are in the family Andrognathidae.{{cite journal|last=KUDO|first=Shin-ichi|author2=KOSHIO, Chiharu |author3=TANABE, Tsutomu |title=Male egg-brooding in the millipede Yamasinaium noduligerum (Diplopoda: Andrognathidae)|journal=Entomological Science|year=2009|volume=12|issue=3|pages=346–347|doi=10.1111/j.1479-8298.2009.00331.x|s2cid=85390085}}{{cite journal|last=Kudo|first=Shin-Ichi|author2=Akagi, Yoshinobu |author3=Hiraoka, Shuichiro |author4=Tanabe, Tsutomu |author5= Morimoto, Gen |title=Exclusive Male Egg Care and Determinants of Brooding Success in a Millipede|journal=Ethology|year=2011|volume=117|issue=1|pages=19–27|doi=10.1111/j.1439-0310.2010.01851.x}}

The only described fossil of the order is from the Mid Cretaceous (~100 Ma) Burmese amber, belonging to the extant genus Andrognathus, several undescribed specimens belonging to the order are known from the same deposit.{{Cite journal|last1=Moritz|first1=Leif|last2=Wesener|first2=Thomas|date=September 2019|title=The first known fossils of the Platydesmida—an extant American genus in Cretaceous amber from Myanmar (Diplopoda: Platydesmida: Andrognathidae)|url=http://link.springer.com/10.1007/s13127-019-00408-0|journal=Organisms Diversity & Evolution|language=en|volume=19|issue=3|pages=423–433|doi=10.1007/s13127-019-00408-0|s2cid=195744191|issn=1439-6092|url-access=subscription}}

Platydesmidans occur in North America, Central America, the Mediterranean region of Europe, Japan, China, southeast Asia and Indonesia.{{cite journal|last=Shelley|first=Rowland M.|title=Centipedes and Millipedes with Emphasis on North American Fauna|journal=The Kansas School Naturalist|year=1999|volume=45|issue=3|pages=1–16|url=http://www.emporia.edu/ksn/v45n3-march1999/|access-date=25 October 2013|archive-url=https://web.archive.org/web/20161112025334/http://www.emporia.edu/ksn/v45n3-march1999/|archive-date=12 November 2016|url-status=dead}}

File:Pseudodesmus cf. variegatus.jpg]]File:Platydesmus species.jpgFile:Platydesmid millipede Malaysia.jpg]]

The order contains two families.{{cite web|url=http://www.catalogueoflife.org/col/browse/tree/id/17063536|title=Catalogue of Life - 24th September 2018 : Taxonomic tree|website=www.catalogueoflife.org|access-date=30 September 2018}}

Family Andrognathidae Cope, 1869

• Andrognathus
• Bazillozonium
• Brachycybe
• Corcyrozonium
• Dolistenus
• Fioria
• Gosodesmus
• Ischnocybe
• Mitocybe
• Pseudodesmus
• Sumatronium
• Symphyopleurium
• Trichozonium
• Yamasinaium
• Zinaceps
• Zinazonium

Family Platydesmidae DeSaussure, 1860

• Desmethus
• Platydesmus

{{Reflist}}

• {{cite book|last=Costa|first=James T.|title=The Other Insect Societies|year=2006|publisher=Belknap Press of Harvard University Press|location=Cambridge, Massachusetts|isbn=9780674021631|pages=667–716|chapter-url=https://books.google.com/books?id=PYRFDrZs9QAC&pg=PA667|chapter=Other Social Arthropds: Arachnids, Centipedes, Millipedes, and Crustaceans}}

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Category:Millipede orders

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