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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Penrose (Box Elder County, Utah, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		2
2
2		Families
Genera
Species		 
Taxom
 


List of families for Penrose (Box Elder County)
2 Families width 2 Species
Theridiidae Sundevall, 1833Cobweb And Widow Spiders1SpeciesTaxom
Salticidae Blackwall, 1842Jumping Spider1SpeciesTaxom


Genera for Penrose (Box Elder County)
2 Genera with 2 Species
Latrodectus Walckenaer, 1935Black widow spider1SpeciesTaxom
Sassacus Peckham & Pe..., 18951SpeciesTaxom


Species list for Penrose (Box Elder County)
2 Species
Latrodectus hesperus Chamberlin &..., 1935Western black widow
Sassacus papenhoei Peckham & Pe..., 1895

Subnodes of Arachnida with occurrences in Penrose (Box Elder County)
SubclassMicrura
Ehrenberg, 1831
2
2
2		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