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Checklist for Infraclass Helminthomorpha Pocock, 1887
and region Petersham (Worcester County, Massachusetts, USA)


Class
 		Diplopoda
De Blainville in Gervais, 1844
Diplopods, Millepedes, Millipede, Millipedes		2
2
2		Families
Genera
Species		 
Taxom
 

Subclass
 		Chilognatha
Latreille, 1802
2
2
2		Families
Genera
Species		 
Taxom
 

Infraclass
 		Helminthomorpha
Pocock, 1887
2
2
2		Families
Genera
Species		 
Taxom
 


List of families for Petersham (Worcester County Massachusetts)
2 Families width 2 Species
Xystodesmidae Cook, 1895Xystodesmid Millipedes1SpeciesTaxom
Polydesmidae Leach, 1815Flat Millipedes1SpeciesTaxom


Genera for Petersham (Worcester County Massachusetts)
2 Genera with 2 Species
Melaphe Cook, 19681SpeciesTaxom
Pseudopolydesmus Attems, 18211SpeciesTaxom


Species list for Petersham (Worcester County Massachusetts)
2 Species
Melaphe castianeira Hoffman & Lo..., 1968
Pseudopolydesmus serratus Say, 1821Common Pink Flat-Back Millipede

Subnodes of Helminthomorpha with occurrences in Petersham (Worcester County Massachusetts)
SuperorderMerocheta
Cook, 1895
2
2
2		Families
Genera
Species
Taxom



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