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Theridiidae Achaearanea sp.A



Order: Araneae

Family: Theridiidae (Cobweb spiders)

Genus: Achaearanea



Description:

Like all Theriidae, this spider has a comb of 6 to 10 slightly curved hairs on tarsus IV. Females have globular abdomens. This specimen has a large, round abdomen that is mostly off-white, but is covered in black and brown spots. Unlike some spiders in this family, the males are only slightly smaller than the females. Females vary from 1.6 to 6 mm, and males from 1.2 to 4.7 mm.

Behavior:
Cobweb spiders build irregular webs with sticky outside threads to entangle prey. As the prey struggles, the spider pulls it into the web, throws silk over it, and kills it.




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Last updated 12/13/2004