St. Francis Sunken Lands WMA, Craighead County, Arkansas, USA September 19, 2006 Size: 4 mm
Triangle Spiders are social. When we found one, we often found 5-6 on nearby twigs. In this picture (these are different individuals from the one depicted with its web), two spiders are back to back, and their webs are set at a 90 degree angle from each other. They lie on their backs holding their webs, pulling the web as taut as they can. You can see the excess web in a tangled pile on the stomach of the closest one.
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