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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Western (Henry County, Illinois, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		4
5
6		Families
Genera
Species		 
Taxom
 


List of families for Western (Henry County Illinois)
4 Families width 6 Species
Johnstonianidae Thor, 19351SpeciesTaxom
Linyphiidae Blackwall, 1859Dwarf spiders1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders2SpeciesTaxom
Tetragnathidae Menge, 1866Elongated Orb Weavers2SpeciesTaxom


Genera for Western (Henry County Illinois)
5 Genera with 6 Species
Centrotrombidium Kramer, 19571SpeciesTaxom
Grammonota Emerton, 18751SpeciesTaxom
Robertus O. P.-Cambridge, 18941SpeciesTaxom
Tetragnatha Latreille, 1850Four-jawed spider2SpeciesTaxom
Theridula Emerton, 19541SpeciesTaxom


Species list for Western (Henry County Illinois)
6 Species
Centrotrombidium culicoides Vercammen-Gr..., 1957
Grammonota pictilis Octavius Pic..., 1875
Robertus fuscus James Henry ..., 1894
Tetragnatha extensa (Linnaeus, 1758)⇒ Tetragnatha montana Simon, 1874
Tetragnatha laboriosa Hentz, 1850Longjawed orb weavers
Theridula emertoni Herbert Walt..., 1954Emerton'S Bitubercled Cobweaver

Subnodes of Arachnida with occurrences in Western (Henry County Illinois)
SubclassMicrura
Ehrenberg, 1831
4
5
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