Cobweb Spiders (Theridiidae)
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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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