Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
BugGuide Gathering
Pack Forest
Washington State
July 10-12, 2009
Details...

Photos from the 2009 gathering
 
Photos from the 2008 gathering in Tennessee
 
Photos from the 2007 gathering in Minnesota

TaxonomyBrowse
Info
ImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynes » Cobweb Spiders (Theridiidae) » Steatoda

Genus Steatoda

Classification · Numbers · Size · Identification · Range · Print References · Works Cited
Black widow-like spider - Steatoda Steatoda grossa - male Cobweb Spider - Steatoda triangulosa - female Spider - Steatoda - female male desert spider - Steatoda - male Spider found in basement - Steatoda Steatoda grossa - male Steatoda borealis
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 Steatoda
Numbers
20 species in our region. (1)
19 species and one subspecies according to the World Spider Catalog. Changes in taxonomy may be the reason for this discrepancy. S. americana and pulchra have been moved to Asagena.
Size
Females: 2.5-11.0 mm; Males: 2.0-7.5 mm. (1)
Identification
Coloration purple-brown, often with white line around anterior of abdomen and other markings. Large colulus.
Range
alamosa
albomaculata
apacheana
atascadera
bipunctata
borealis
castanea (Canada)
erigoniformis (tropical)
grandis
grossa
hespera
mexicana
palomara
punctulata
quadrimaculata
transversa
triangulosa
variata
- variata china
washona
Print References
"The Spider Genera Steatoda and Enoplognatha in America", Levi, Psyche, 1962.
Works Cited
1.Spiders of North America: An Identification Manual
By D. Ubick, P. Paquin, P.E. Cushing and V. Roth (eds)
Contributed by john and jane balaban on 10 September, 2004 - 4:16pm
Additional contributions by Lynette, Jay Barnes, kschnei
Last updated 3 October, 2009 - 12:14pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2009 Iowa State University, unless otherwise noted.

Bugguide is hosted by Iowa State University Entomology.

Printer Friendly Version 		Terms of Use
Privacy Policy
Site Map
Contact