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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Arroyo Grande (San Luis Obispo County, California, USA)


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


List of families for Arroyo Grande
2 Families width 4 Species
Buthidae (C. L. Koch, 1837)Arrowbreasted scorpions3SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders1SpeciesTaxom


Genera for Arroyo Grande
2 Genera with 4 Species
Centruroides Marx, 1898Bark scorpions3SpeciesTaxom
Latrodectus Walckenaer, 1935Black widow spider1SpeciesTaxom


Species list for Arroyo Grande
4 Species
Centruroides limpidus Karsch, 1879
Centruroides meisei Hoffman, 1939
Centruroides nigrescens (Pocock, 1898)⇒ Centruroides gracilis Latreille, 1804
Latrodectus hesperus Chamberlin &..., 1935Western black widow

Subnodes of Arachnida with occurrences in Arroyo Grande
SubclassDromopoda
Shultz, 1990
1
1
3		Family
Genus
Species
Taxom

SubclassMicrura
Ehrenberg, 1831
1
1
1		Family
Genus
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