The family Cybaeidae, in the order Araneae (spiders), is a group of mostly cribellate or ecribellate spiders commonly referred to as cybaeid spiders or mesh web spiders. These spiders are generally medium-sized, with robust bodies and eight eyes arranged in two rows. They are known for constructing irregular, sheet-like or mesh webs, often in moist environments such as under rocks, leaf litter, or near streams. Cybaeids are primarily nocturnal hunters, feeding on insects and other small arthropods that become trapped in their webs. Although not widely studied, the family is distributed across North America, Europe, and parts of Asia, and plays a role in controlling invertebrate populations in forested and riparian habitats.