Uloborus glomosus is a species of spider in the family Uloboridae. It is one of only a few Uloborus species found in North America and the only species found in Canada. Like all other species in the Uloboridae family Uloborus glomosus does not possess venom glands, relying instead on cribellate, a fuzzy non sticky silk that they use to trap and then wrap their prey.
Found on hand rails and behind signs. Lacks venom glands! Female will shake web if eggs are present and not if not. Concentric stabilimentum.