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


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


List of families for Brentwood (Contra Costa County)
7 Families width 6 Species
Eriophyidae Nalepa, 1898Blister mites1SpeciesTaxom
Corinnidae Karsch, 1880Ant-like Sac Spiders1SpeciesTaxom
Salticidae (Blackwall, 1842)Jumping Spider1SpeciesTaxom
Sclerosomatidae Simon, 1879Sclerosomatid Harvestmen0SpeciesTaxom
Segestriidae Simon, 1893Six-eyed Spiders1SpeciesTaxom
Tengellidae Dahl, 1908Tengellid spiders1SpeciesTaxom
Tetranychidae Donnadieu, 1875Spider mites1SpeciesTaxom


Genera for Brentwood (Contra Costa County)
7 Genera with 6 Species
Aculops Keifer, 19721SpeciesTaxom
Apochinomma Pavesi, 18961SpeciesTaxom
Myrmarachne MacLeay, 1980Antmimicking spider1SpeciesTaxom
Protolophus Banks, 1893
0SpeciesTaxom
Segestria Latreille, 18911SpeciesTaxom
Socalchemmis Platnick & U..., 19191SpeciesTaxom
Tetranychus Dufour, 19191SpeciesTaxom


Species list for Brentwood (Contra Costa County)
6 Species
Aculops fuchsiae Keifer, 1972Fuchsia gall mite
Apochinomma formica Eugène Simon, 1896
Myrmarachne platypalpus (Bradoo, 1980)⇒ Myrmarachne platypalpa Bradoo, 1980
Segestria pacifica Richard C. B..., 1891
Socalchemmis dolichopus Ralph Vary C..., 1919
Tetranychus pacificus McGregor, 1919Pacific mite

Subnodes of Arachnida with occurrences in Brentwood (Contra Costa County)
SubclassDromopoda
Shultz, 1990
1
1
0		Family
Genus
Species
Taxom

SubclassMicrura
Ehrenberg, 1831
6
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