Species list, Checklist of Order Polydesmida (Flat-backed Millipedes) for Chester County (Pennsylvania, USA)

Ants	Arachnids
Bees	Beetles
Booklice	Bugs
Bumblebees	Butterflies
Cicadas	Crane flies
Dragonflies	Earwigs
Flies	Isopods
Locusts	Mantises
Mayflies	Mosquitoes
Myriapods	Net-winged
Plant-parasitic	Scorpion flies
Termites	Wasps

Taxonomy & Distribution
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INSECTOIDGERENGDARK LIGHT

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

Class	Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes	4 4 3	Families Genera Species	Taxom
Subclass	Chilognatha Latreille, 1802	4 4 3	Families Genera Species	Taxom
Infraclass	Helminthomorpha Pocock, 1887	4 4 3	Families Genera Species	Taxom
Superorder	Merocheta Cook, 1895	2 2 1	Families Genera Species	Taxom
Order	Polydesmida Pocock, 1887 Flat-backed Millipedes	2 2 1	Families Genera Species	Taxom

List of families for Chester County (Pennsylvania)
2 Families width 1 Species

Platyrhacidae Pocock, 1895		1	Species	Taxom
Polydesmidae Leach, 1815	Flat Millipedes	0	Species	Taxom

Genera for Chester County (Pennsylvania)
2 Genera with 1 Species

Platyrhacus Koch, 1899		1	Species	Taxom
Polydesmus Latreille, 1803	Flat Backed Millipedes	0	Species	Taxom

Species list for Chester County (Pennsylvania)
1 Species

Platyrhacus helophorus Attems, 1899

Subnodes of Polydesmida with occurrences in Chester County (Pennsylvania)

Suborder	Chelodesmidea Cook, 1895	1 1 1	Family Genus Species	Taxom
Suborder	Polydesmidea Leach, 1815	1 1 0	Family Genus 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