Hackled orbweaversThe spiders called hackled orbweavers (Uloboridae) have a special adaptation that enables them to produce hackled silk, i.e., a silk that has a feathery, fuzzy texture. These spiders do not use an adhesive of their webs. Instead, the multiplicity of very fine fibers in each strand of silk tends to tangle the prey up. They use this silk to make an orb web. The webs of spiders of this genus often have a stabilimentum or zig-zag pattern through the center of the web.The spiders in this genus have the distinction of lacking venom.