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Checklist for Infraclass Helminthomorpha Pocock, 1887
and region Mercer County (Pennsylvania, USA)


Class
 		Diplopoda
De Blainville in Gervais, 1844
Diplopods, Millepedes, Millipede, Millipedes		8
9
9		Families
Genera
Species		 
Taxom
 

Subclass
 		Chilognatha
Latreille, 1802
8
9
9		Families
Genera
Species		 
Taxom
 

Infraclass
 		Helminthomorpha
Pocock, 1887
8
9
9		Families
Genera
Species		 
Taxom
 


List of families for Mercer County (Pennsylvania)
8 Families width 9 Species
Abacionidae Shelley, 19791SpeciesTaxom
Xystodesmidae Cook, 1895Xystodesmid Millipedes0SpeciesTaxom
Craspedosomatidae Gray, 1843Craspedosomatid Millipedes1SpeciesTaxom
Julidae Leach, 1814Juliform Millipedes1SpeciesTaxom
Parajulidae Bollman, 1893Parajulid Millipedes1SpeciesTaxom
Platyrhacidae Pocock, 18951SpeciesTaxom
Polydesmidae Leach, 1815Flat Millipedes3SpeciesTaxom
Trigoniulidae Attems, 19091SpeciesTaxom


Genera for Mercer County (Pennsylvania)
9 Genera with 9 Species
Abacion Rafinesque, 18211SpeciesTaxom
Apheloria Chamberlin, 1921
0SpeciesTaxom
Ochogona Cook, 18991SpeciesTaxom
Ophyiulus Berlese, 18431SpeciesTaxom
Parajulus Humbert & De..., 18211SpeciesTaxom
Platyrhacus Koch, 18991SpeciesTaxom
Pseudopolydesmus Attems, 18212SpeciesTaxom
Scytonotus Koch, 18211SpeciesTaxom
Trigoniulus Pocock, 19451SpeciesTaxom


Species list for Mercer County (Pennsylvania)
9 Species
Abacion lactarium Say, 1821
Ochogona phyllophaga Attems, 1899
Ophyiulus pilosus Newport, 1843Walnut Canyon talussnail
Parajulus impressus Say, 1821
Platyrhacus helophorus Attems, 1899
Pseudopolydesmus canadensis Newport, 1844Canadian Flat-Back Millipede
Pseudopolydesmus serratus Say, 1821Common Pink Flat-Back Millipede
Scytonotus granulatus Say, 1821Granulated Millipede
Trigoniulus amnestus Chamberlin, 1945

Subnodes of Helminthomorpha with occurrences in Mercer County (Pennsylvania)
SuperorderAnocheta
Cook, 1895
1
1
1		Family
Genus
Species
Taxom

SuperorderCoelocheta
Cook, 1896
2
2
2		Families
Genera
Species
Taxom

SuperorderJuliformia
Attems, 1926
2
2
2		Families
Genera
Species
Taxom

SuperorderMerocheta
Cook, 1895
3
4
4		Families
Genera
Species
Taxom



Links, sources and further information
Helminthomorpha at artfakta.se
Helminthomorpha at itis.gov
Helminthomorpha at marinespecies.org