Cellar Spider (or similar slender spider)

Dark, damp, and undisturbed indoor and outdoor areas such as cellars, basements, crawl spaces, and corners of rooms.

Insects and other spiders, often including larger web-weaving spiders

Builds messy, irregular webs in corners; vibrates rapidly when disturbed to confuse predators.

Harmless to humans with very weak venom; beneficial for controlling household insect pests.