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Checklist for Order Polydesmida Pocock, 1887 (Flat-backed Millipedes)
and region King County (Washington, USA)


Class
 		Diplopoda
De Blainville in Gervais, 1844
Diplopods, Millepedes, Millipede, Millipedes		12
16
14		Families
Genera
Species		 
Taxom
 

Subclass
 		Chilognatha
Latreille, 1802
12
16
14		Families
Genera
Species		 
Taxom
 

Infraclass
 		Helminthomorpha
Pocock, 1887
12
16
14		Families
Genera
Species		 
Taxom
 

Superorder
 		Merocheta
Cook, 1895
4
6
6		Families
Genera
Species		 
Taxom
 

Order
 		Polydesmida
Pocock, 1887
Flat-backed Millipedes		4
6
6		Families
Genera
Species		 
Taxom
 


List of families for King County (Washington)
4 Families width 6 Species
Xystodesmidae Cook, 1895Xystodesmid Millipedes1SpeciesTaxom
Paradoxosomatidae (Daday, 1889)1SpeciesTaxom
Platyrhacidae Pocock, 18951SpeciesTaxom
Polydesmidae Leach, 1815Flat Millipedes3SpeciesTaxom


Genera for King County (Washington)
6 Genera with 6 Species
Harpaphe Cook, 18641SpeciesTaxom
Oxidus Cook, 18471SpeciesTaxom
Platyrhacus Koch, 18991SpeciesTaxom
Polydesmus Latreille, 1884Flat Backed Millipedes1SpeciesTaxom
Pseudopolydesmus Attems, 18211SpeciesTaxom
Scytonotus Koch, 19111SpeciesTaxom


Species list for King County (Washington)
6 Species
Harpaphe haydenianus Wood, 1864
Oxidus gracilis (C. L. Koch, 1847)⇒ Oxidus gigas Attems, 1953
Platyrhacus helophorus Attems, 1899
Polydesmus angustus Latzel, 1884Bridge Creek chaparral
Pseudopolydesmus serratus Say, 1821Common Pink Flat-Back Millipede
Scytonotus bergrothi Chamberlin, 1911

Subnodes of Polydesmida with occurrences in King County (Washington)
SuborderChelodesmidea
Cook, 1895
2
2
2		Families
Genera
Species
Taxom

SuborderParadoxosomatidea
Daday, 1889
1
1
1		Family
Genus
Species
Taxom

SuborderPolydesmidea
Leach, 1815
1
3
3		Family
Genera
Species
Taxom



Links, sources and further information
Polydesmida at artfakta.se
Polydesmida at dyntaxa.se
Polydesmida at gbif.org
Polydesmida at irmng.org
Polydesmida at itis.gov