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Checklist for Order Pseudoscorpiones Haeckel, 1866 (False Scorpions)
and region Middlesex County (Massachusetts, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		62
220
340		Families
Genera
Species		 
Taxom
 

Subclass
 		Dromopoda
Shultz, 1990
11
17
23		Families
Genera
Species		 
Taxom
 

Order
 		Pseudoscorpiones
Haeckel, 1866
False Scorpions, Pseudoscorpion, Pseudoscorpions		6
9
9		Families
Genera
Species		 
Taxom
 


List of families for Middlesex County (Massachusetts)
6 Families width 9 Species
Cheiridiidae Hansen, 18931SpeciesTaxom
Cheliferidae (Risso, 1826)2SpeciesTaxom
Chernetidae Menge, 18553SpeciesTaxom
Chthoniidae Daday, 18881SpeciesTaxom
Neobisiidae Chamberlin, 19301SpeciesTaxom
Garypidae Simon, 18791SpeciesTaxom


Genera for Middlesex County (Massachusetts)
9 Genera with 9 Species
Cheiridium Menge, 18171SpeciesTaxom
Chelifer Geoffroy, 17581SpeciesTaxom
Chernes Menge, 18681SpeciesTaxom
Chthonius Koch, 18041SpeciesTaxom
Hesperochernes J. C. Chambe..., 19301SpeciesTaxom
Microbisium Chamberlin, 18681SpeciesTaxom
Obisium touricum Beier, 18681SpeciesTaxom
Pselaphochernes Beier, 18041SpeciesTaxom
Synsphyronus J. C. Chambe..., 19431SpeciesTaxom


Species list for Middlesex County (Massachusetts)
9 Species
Cheiridium museorum Leach, 1817Book Scorpion
Chelifer cancroides Linnaeus, 1758Book pseudoscorpion
Chernes sanborni Hagen, 1868
Chthonius (Chthonius) ischnocheles Hermann, 1804Common Chthonid
Hesperochernes tamiae Beier, 1930
Microbisium brunneum Hagen, 1868
Obisium brunneum (Hagen, 1868)⇒ Microbisium brunneum Hagen, 1868
Pselaphochernes scorpioides Hermann, 1804Compost Chernes
Synsphyronus mimetus Chamberlin, 1943Costate mountainsnail

Subnodes of Pseudoscorpiones with occurrences in Middlesex County (Massachusetts)
SuborderEpiocheirata
Harvey, 1992
1
1
1		Family
Genus
Species
Taxom

SuborderIocheirata
Harvey, 1992
5
8
8		Families
Genera
Species
Taxom



Links, sources and further information
Pseudoscorpiones at museum.wa.gov.au
Pseudoscorpiones at artfakta.se
Pseudoscorpiones at biodiversity.org.au
Pseudoscorpiones at dyntaxa.se
Pseudoscorpiones at gbif.org
Pseudoscorpiones at itis.gov
Pseudoscorpiones at marinespecies.org