They paralyze the insect with venom. A few spiders have venom which is harmful to people. In North America, these include the black widow spider and the brown recluse spider. Some spiders do not trap prey in webs. These hunt or lie in wait for prey.
Spiders use their silk to spin webs, construct their egg sacs and build shelters.
Not all spider webs are alike. Some make round webs, others make funnel-like webs. Some have irregular shape. Male spiders are often smaller than the female spiders. E-mail me and tell me about it.