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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region San Pablo (Contra Costa County, California, USA)


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


List of families for San Pablo (Contra Costa County)
4 Families width 4 Species
Amaurobiidae Thorell, 1870Amaurobiids1SpeciesTaxom
Gnaphosidae Pocock, 1898Flat-bellied ground spiders1SpeciesTaxom
Sparassidae (Bertkau, 1872)Giant crab spiders1SpeciesTaxom
Theridiidae (Sundevall, 1833)Cobweb And Widow Spiders1SpeciesTaxom


Genera for San Pablo (Contra Costa County)
4 Genera with 4 Species
Callobius Chamberlin, 1884Hacklemesh Weaver1SpeciesTaxom
Drassyllus Chamberlin, 19001SpeciesTaxom
Heteropoda Latreille, 17671SpeciesTaxom
Latrodectus Walckenaer, 1775Black widow spider1SpeciesTaxom


Species list for San Pablo (Contra Costa County)
4 Species
Callobius severus Eugène Simon, 1884
Drassyllus insularis Banks, 1900
Heteropoda venatoria (Linnaeus, 1767)⇒ Heteropoda simplex Jäger & Ono, 2000
Latrodectus mactans (Fabricius, 1775)⇒ Latrodectus tredecimguttatus Rossi, 1790

Subnodes of Arachnida with occurrences in San Pablo (Contra Costa County)
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