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Checklist for Infraorder Araneomorphi Smith, 1902
and region Nelson (Tioga County, Pennsylvania, USA)


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

Subclass
 		Micrura
Ehrenberg, 1831
6
7
6		Families
Genera
Species		 
Taxom
 

Infraclass
 		Megoperculata
Börner, 1902
6
7
6		Families
Genera
Species		 
Taxom
 

Order
 		Araneae
Clerck, 1757
Spider, Spiders, True Spiders		6
7
6		Families
Genera
Species		 
Taxom
 

Suborder
 		Araneomorphae
Smith, 1902
True Spiders		6
7
6		Families
Genera
Species		 
Taxom
 

Infraorder
 		Araneomorphi
Smith, 1902
6
7
6		Families
Genera
Species		 
Taxom
 


List of families for Nelson (Tioga County Pennsylvania)
6 Families width 6 Species
Dysderidae (C. L. Koch, 1837)Dysderid spiders1SpeciesTaxom
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)
7 Genera with 6 Species
Dysdera Latreille, 18381SpeciesTaxom
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)
6 Species
Dysdera crocata (Koch, 1838)⇒ Dysdera maurusia Tord Tamerla..., 1873
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