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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Altona (Boulder County, Colorado, USA)


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


List of families for Altona (Boulder County)
5 Families width 5 Species and 1 Subspecies
Miturgidae Simon, 1885Long-legged sac spiders1SpeciesTaxom
Dysderidae (C. L. Koch, 1837)Dysderid spiders1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders1SpeciesTaxom
Philodromidae Thorell, 1870False crab spiders1SpeciesTaxom
Bothriuridae Simon, 18801SpeciesTaxom


Genera for Altona (Boulder County)
5 Genera with 5 Species
Cheiracanthium C. L. Koch, 1864Longlegged sac spiders1SpeciesTaxom
Dysdera Latreille, 18381SpeciesTaxom
Steatoda Sundevall, 1838False black widows1SpeciesTaxom
Thanatus C. L. Koch, 18451SpeciesTaxom
Urophonius Pocock, 18761SpeciesTaxom


Species list for Altona (Boulder County)
5 Species and 1 Subspecies
Cheiracanthium mildei L. Koch, 1864North Yellow Sac Spider
Dysdera crocata (Koch, 1838)⇒ Dysdera maurusia Tord Tamerla..., 1873
Steatoda grossa C. L. Koch, 1838Brown house spider
Thanatus striatus C. L. Koch, 1845
Urophonius brachycentrus brachycentrus Thorell, 1876

Subnodes of Arachnida with occurrences in Altona (Boulder County)
SubclassDromopoda
Shultz, 1990
1
1
1		Family
Genus
Species
Taxom

SubclassMicrura
Ehrenberg, 1831
4
4
4		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