Cobweb Spiders (Theridiidae)

Cobweb weavers range in size from under 1 mm to around 12 mm. They build irregular webs in a variety of habitats. This family includes the black widow, Latrodectus hesperus, whose bite is medically significant. They are also called "comb-footed spiders" because of a special row of spines at the end of their fourth leg with which they wrap their prey in silk.


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False Black Widow
2005 Arie van der Meijden
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Black Widow Spider
Alden M. Johnson 1999 California Academy of Sciences
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Western Black Widow
2006 Joyce Gross


More information about Theridiidae

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Last updated: Mar 8, 2007