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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Nelson (Tioga County, Pennsylvania, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		7
8
7		Families
Genera
Species		 
Taxom
 


List of families for Nelson (Tioga County Pennsylvania)
7 Families width 7 Species
Dysderidae (C. L. Koch, 1837)Dysderid spiders1SpeciesTaxom
Phalangiidae Latreille, 1802Daddy-Long-Legs1SpeciesTaxom
Philodromidae (Thorell, 1870)False crab spiders1SpeciesTaxom
Pholcidae (C. L. Koch, 1851)Carpenter spider1SpeciesTaxom
Linyphiidae Blackwall, 1859Dwarf spiders0SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders2SpeciesTaxom
Thomisidae Sundevall, 1833Crab Spider1SpeciesTaxom


Genera for Nelson (Tioga County Pennsylvania)
8 Genera with 7 Species
Dysdera Latreille, 18381SpeciesTaxom
Phalangium Linnaeus, 17611SpeciesTaxom
Philodromus Walckenaer, 1826Running Crab Spider1SpeciesTaxom
Pholcus Walckenaer, 17751SpeciesTaxom
Pityohyphantes Simon, 1929
Hammock Spiders0SpeciesTaxom
Steatoda Sundevall, 1838False black widows1SpeciesTaxom
Theridion Walckenaer, 1882Tangle-Web Spiders1SpeciesTaxom
Xysticus Koch, 1890Ground Crab Spider1SpeciesTaxom


Species list for Nelson (Tioga County Pennsylvania)
7 Species
Dysdera crocata (Koch, 1838)⇒ Dysdera maurusia Tord Tamerla..., 1873
Phalangium opilio Linnaeus, 1761Brown daddy-long-legs
Philodromus rufus (Walckenaer, 1826)⇒ Philodromus albidus Wladislaus K..., 1911
Pholcus phalangioides (Fuesslin, 1775)⇒ Smeringopus pallidus Blackwall, 1858
Steatoda grossa C. L. Koch, 1838Brown house spider
Theridion murarium James Henry ..., 1882
Xysticus helophilus Eugène Simon, 1890

Subnodes of Arachnida with occurrences in Nelson (Tioga County Pennsylvania)
SubclassDromopoda
Shultz, 1990
1
1
1		Family
Genus
Species
Taxom

SubclassMicrura
Ehrenberg, 1831
6
7
6		Families
Genera
Species
Taxom



Arachnida (Lamarck 1801)
Arachnida (Lamarck 1801)


Links, sources and further information
Arachnida at biolcoll.utu.fi
Arachnida at wiki.spinnen-forum.de
Arachnida at spiderling.de
Arachnida at wsc.nmbe.ch
Arachnida at artfakta.se
Arachnida at biodiversity.org.au
Arachnida at dyntaxa.se
Arachnida at gbif.org
Arachnida at irmng.org
Arachnida at itis.gov
Arachnida at marinespecies.org