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For Insects, Spiders & Their Kin
For the United States & Canada
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Calendar
BugGuide Gathering
Pack Forest
Washington State
July 10-12, 2009
Details...

Photos from the 2008 gathering in Tennessee
 
Photos from the 2007 gathering in Minnesota

TaxonomyBrowse
Info
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Genus Theridion

small spider - Theridion frondeum Spider on leaf - Theridion tinctum - female Which spider, please? - Theridion Tiny marbled spider - Theridion Theridion sex- - Theridion - male - female Subadult Male Spider - Theridion - male Theridion male? - Theridion - male perhaps Theridion frondeum - Theridion frondeum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes)
Family Theridiidae (Cobweb Spiders)
Genus Theridion
Numbers
65 species in our region. (1)

Texas Species:
Theridion australe Banks, 1899
Theridion cameronense Levi, 1957
Theridion cinctipes Banks, 1898
Theridion cynicum Gertsch & Mulaik, 1936
Theridion differens Emerton, 1882
Theridion dilutum Levi, 1957
Theridion dividuum Gertsch & Archer, 1942
Theridion flavonotatum Becker, 1879
Theridion frondeum Hentz, 1850
Theridion glaucescens Becker, 1879
Theridion goodnightorum Levi, 1957
Theridion hidalgo Levi, 1957
Theridion llano Levi, 1957
Theridion murarium Emerton, 1882
Theridion myersi Levi, 1957
Theridion positivum Chamberlin, 1924
Theridion rabuni Chamberlin & Ivie, 1944
Theridion submissum Gertsch & Davis, 1936
Remarks
One tropical species, Theridion nigroannulatum, not in our area, is social.
Print References
Spiders of the Eastern US, Howell and Jenkins, pages 110 - 113.(2)
Internet References
The Spider Genera Enoplognatha, Theridion and Paidisca in America North of Mexico, Levi revision in Bulletin of the American Museum of Natural History (1957) - large pdf file which may require a long download time.

~ Peggy Dorris Survey List - List of Theridion and states where they were found.
Works Cited
1.Spiders of North America: An Identification Manual
By D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds)
2.Spiders of the Eastern US, A Photographic Guide
By W. Mike Howell and Ronald L. Jenkins