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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Willow Creek (Lassen County, California, USA)


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


List of families for Willow Creek (Lassen County)
7 Families width 8 Species and 1 Subspecies
Salticidae Blackwall, 1842Jumping Spider1SpeciesTaxom
Dysderidae C. L. Koch, 1837Dysderid spiders2SpeciesTaxom
Araneidae Simon, 1895Golden orb web spiders1SpeciesTaxom
Phalangodidae Simon, 18791SpeciesTaxom
Lycosidae (Lehtinen & H..., 1979)Ground Spiders1SpeciesTaxom
Tetragnathidae Menge, 1866Elongated Orb Weavers1SpeciesTaxom
Bothriuridae Simon, 18801SpeciesTaxom


Genera for Willow Creek (Lassen County)
7 Genera with 8 Species
Anasaitis Bryant, 18371SpeciesTaxom
Dysdera Latreille, 20012SpeciesTaxom
Larinioides Caporiacco, 1758Furrow spiders1SpeciesTaxom
Megacina Ubick & Briggs, 19421SpeciesTaxom
Pardosa C. L. Koch, 1885Thin-legged Wolf Spider1SpeciesTaxom
Tetragnatha Latreille, 1842Four-jawed spider1SpeciesTaxom
Urophonius Pocock, 18761SpeciesTaxom


Species list for Willow Creek (Lassen County)
8 Species and 1 Subspecies
Anasaitis canosa Walckenaer, 1837Twin-flagged jumping spider
Dysdera nomada Eugène Simon, 1910Stocky cerith
Dysdera pristiphora Carlo Pesarini, 2001
Larinioides patagiatus Clerck, 1758Ornamental Orbweaver
Megacina cockerelli C.J.Goodnigh..., 1942Maricopa milkvetch
Pardosa lapidicina (James Henry ..., 1885)⇒ Pardosa mercurialis M. E. Montgo..., 1904
Tetragnatha versicolor Walckenaer, 1842
Urophonius brachycentrus brachycentrus Thorell, 1876

Subnodes of Arachnida with occurrences in Willow Creek (Lassen County)
SubclassDromopoda
Shultz, 1990
2
2
2		Families
Genera
Species
Taxom

SubclassMicrura
Ehrenberg, 1831
5
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