Uloborus is a genus of spiders belonging to the family Uloboridae, commonly known as wandering spiders or cribellate spiders. These spiders are notable for their unique silk-spinning abilities and lack of venom. Instead of fangs that inject venom, Uloborus spiders have modified chelicerae that allow them to catch and immobilize their prey through a process of physical entanglement.

Typically found in gardens, forests, and other natural habitats, Uloborus species construct irregular webs, often positioned in a three-dimensional space to capture unsuspecting insects. Their webs are characterized by a lack of sticky silk; instead, they utilize a cribellate silk that is fine and can wrap around prey effectively. This adaptation allows them to ensnare a variety of small insects, including flies and moths.

Uloborus spiders are usually small to medium-sized, with some species exhibiting distinctive coloration and patterns that provide camouflage against their surroundings. They are generally nocturnal, relying on their excellent sensory capabilities to detect vibrations in their webs when prey is caught.

Reproductive behavior in Uloborus involves elaborate courtship displays, and females are known to be selective in mate choice. After mating, females typically produce egg sacs that are carefully hidden to protect the developing young.