Species list, Checklist of Family Theridiidae (Cobweb And Widow Spiders) for Fairfax County (Virginia, USA)

Ants	Arachnids
Bees	Beetles
Booklice	Bugs
Bumblebees	Butterflies
Cicadas	Crane flies
Dragonflies	Earwigs
Flies	Isopods
Locusts	Mantises
Mayflies	Mosquitoes
Myriapods	Net-winged
Plant-parasitic	Scorpion flies
Termites	Wasps

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INSECTOIDGERENGDARK LIGHT

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Checklist for Family Theridiidae Sundevall, 1833 (Cobweb And Widow Spiders)
and region Fairfax County (Virginia, USA)

Class	Arachnida Lamarck, 1801 Arachnids	43 78 84	Families Genera Species	Taxom
Subclass	Micrura Ehrenberg, 1831	37 68 73	Families Genera Species	Taxom
Infraclass	Megoperculata Börner, 1902	17 46 52	Families Genera Species	Taxom
Order	Araneae Clerck, 1757 Spider, Spiders, True Spiders	17 46 52	Families Genera Species	Taxom
Suborder	Araneomorphae Smith, 1902 True Spiders	14 43 49	Families Genera Species	Taxom
Infraorder	Araneomorphi Smith, 1902	14 43 49	Families Genera Species	Taxom
Superfamily	Araneoidea Latreille, 1806	4 16 18	Families Genera Species	Taxom
Family	Theridiidae Sundevall, 1833 Cobweb And Widow Spiders, Cobweb spider, Cobweb spiders	6 7	Genera Species	Taxom

Genera for Fairfax County
6 Genera with 7 Species

Argyrodes Simon, 1906	Dewdrop spiders	1	Species	Taxom
Asagena Sundevall, 1882		1	Species	Taxom
Dipoena Thorell, 1953		1	Species	Taxom
Enoplognatha Pavesi, 1758		1	Species	Taxom
Episinus Walckenaer, 1809		1	Species	Taxom
Steatoda Sundevall, 1802	False black widows	2	Species	Taxom

Species list for Fairfax County
7 Species

Argyrodes pluto Richard C. B..., 1906
Asagena americana James Henry ..., 1882	Two-Spotted Cobweb Spider
Dipoena appalachia Herbert Walt..., 1953
Enoplognatha ovata (Clerck, 1758)	⇒ Enoplognatha latimana Hippa & Oksala, 1982
Episinus truncatus (Latreille, 1809)	⇒ Episinus angulatus John Blackwall, 1836
Steatoda grossa C. L. Koch, 1838	Brown house spider
Steatoda triangulosa Walckenaer, 1802	Triangulate bud spider

Subnodes of Theridiidae with occurrences in Fairfax County

Subfamily	Argyrodinae Simon, 1894	1 1	Genus Species	Taxom
Subfamily	Hadrotarsinae Thorell, 1881	1 1	Genus Species	Taxom
Subfamily	Latrodectinae Petrunkevitch, 1928	1 2	Genus Species	Taxom
Subfamily	Pholcommatinae Simon, 1894	1 1	Genus Species	Taxom
Subfamily	Sphintharinae	1 1	Genus Species	Taxom

Theridiidae (Sundevall 1833)

Links, sources and further information

Theridiidae at artfakta.se
Theridiidae at biodiversity.org.au
Theridiidae at dyntaxa.se
Theridiidae at gbif.org
Theridiidae at irmng.org
Theridiidae at itis.gov