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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region San Lorenzo (Alameda County, California, USA)


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


List of families for San Lorenzo (Alameda County)
4 Families width 6 Species
Corinnidae Karsch, 1880Ant-like Sac Spiders1SpeciesTaxom
Araneidae Simon, 1895Golden orb web spiders1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders3SpeciesTaxom
Ereynetidae Schrank, 17761SpeciesTaxom


Genera for San Lorenzo (Alameda County)
6 Genera with 6 Species
Apochinomma Pavesi, 18961SpeciesTaxom
Araneus Clerck, 1859Angulate & roundshouldered orbweavers1SpeciesTaxom
Argyrodes Simon, 1842Dewdrop spiders1SpeciesTaxom
Hydranetes Kethley, 19711SpeciesTaxom
Latrodectus Walckenaer, 1775Black widow spider1SpeciesTaxom
Steatoda Sundevall, 1838False black widows1SpeciesTaxom


Species list for San Lorenzo (Alameda County)
6 Species
Apochinomma formica Eugène Simon, 1896
Araneus balanus Doleschall, 1859
Argyrodes argyrodes (Walckenaer, 1842)⇒ Neospintharus trigonum Nicholas Mar..., 1850
Hydranetes tropisternus Kethley, 1971
Latrodectus mactans (Fabricius, 1775)⇒ Latrodectus tredecimguttatus Rossi, 1790
Steatoda grossa C. L. Koch, 1838Brown house spider

Subnodes of Arachnida with occurrences in San Lorenzo (Alameda County)
SubclassMicrura
Ehrenberg, 1831
4
6
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