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Checklist for Infraorder Fornicephalae Raven, 1985
and region Northwestern Illinois (Northern Illinois, Illinois, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		92
274
562		Families
Genera
Species		 
Taxom
 

Subclass
 		Micrura
Ehrenberg, 1831
77
246
523		Families
Genera
Species		 
Taxom
 

Infraclass
 		Megoperculata
Börner, 1902
37
197
484		Families
Genera
Species		 
Taxom
 

Order
 		Araneae
Clerck, 1757
Spider, Spiders, True Spiders		36
196
483		Families
Genera
Species		 
Taxom
 

Suborder
 		Mygalomorphae
Pocock, 1892
Mygalomorphs, Primitive spiders		1
1
2		Family
Genus
Species		 
Taxom
 

Infraorder
 		Fornicephalae
Raven, 1985
1
1
2		Family
Genus
Species		 
Taxom
 


List of families for Northwestern Illinois
1 Family width 2 Species
Atypidae Thorell, 1870Atypical tarantulas2SpeciesTaxom


Genera for Northwestern Illinois
1 Genera with 2 Species
Sphodros Walckenaer, 18292SpeciesTaxom


Species list for Northwestern Illinois
2 Species
Sphodros coylei Gertsch & Pl..., 1980
Sphodros rufipes Latreille, 1829Red legged purseweb spider

Subnodes of Fornicephalae with occurrences in Northwestern Illinois
SuperfamilyAtypoidea
Thorell, 1870
1
1
2		Family
Genus
Species
Taxom