Broad-faced Sac Spider / Trachelas tranquillus

Commonly found in leaf litter, under rocks, logs, and debris outdoors. They frequently enter homes and buildings, especially in cooler weather.

Primarily other small insects and arthropods.

Fast moving, nocturnal hunters. They do not build webs for prey capture but may use silk for retreat building or egg sacs.

Generally considered beneficial as predators of other insects. Bites are rare but can occur if provoked or accidentally trapped against skin. The venom is not medically significant for humans and typically results in localized pain, redness, and swelling, similar to a bee sting. No long-term effects are expected.