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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Somerset (Montgomery County, Maryland, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		5
7
6		Families
Genera
Species		 
Taxom
 


List of families for Somerset (Maryland)
5 Families width 6 Species
Amaurobiidae Thorell, 1870Amaurobiids1SpeciesTaxom
Ascidae Oudemans, 19050SpeciesTaxom
Tetranychidae Donnadieu, 1875Spider mites2SpeciesTaxom
Araneidae Simon, 1895Golden orb web spiders1SpeciesTaxom
Theridiidae Sundevall, 1833Cobweb And Widow Spiders2SpeciesTaxom


Genera for Somerset (Maryland)
7 Genera with 6 Species
Amaurobius Koch, 18301SpeciesTaxom
Arctoseius Thor, 1930
0SpeciesTaxom
Bryobia Koch, 18351SpeciesTaxom
Cyclosa Menge, 1772Three-lobed Spiders1SpeciesTaxom
Latrodectus Walckenaer, 1841Black widow spider1SpeciesTaxom
Steatoda Sundevall, 1838False black widows1SpeciesTaxom
Tetranychus Dufour, 18361SpeciesTaxom


Species list for Somerset (Maryland)
6 Species
Amaurobius ferox Walckenaer, 1830Black lace-weaver
Bryobia (Bryobia) praetiosa (C. L. Koch, 1835)⇒ Bryobia macrotibialis Mathys, 1962
Cyclosa conica Pallas, 1772Conical Trashline Orbweaver
Latrodectus geometricus C. L. Koch, 1841Brown black widow
Steatoda grossa C. L. Koch, 1838Brown house spider
Tetranychus (Tetranychus) urticae C. L. Koch, 1836Carmine spider mite

Subnodes of Arachnida with occurrences in Somerset (Maryland)
SubclassMicrura
Ehrenberg, 1831
5
7
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