Broad-faced Sac Spider
Scientific Name: Trachelas tranquillus
Order & Family: Araneae, Corinnidae
Size: Females typically 6-10 mm; males 5-7 mm (body length).

Natural Habitat
Found in various habitats, including indoors in homes, under bark, rocks, and leaf litter. Often found in gardens and natural areas.
Diet & Feeding
Predatory, feeding on a wide variety of small insects and other arthropods.
Behavior Patterns
Nocturnal hunters, actively seeking prey rather than building webs for capture. They create silken sacs or retreats under bark, rocks, or in crevices to rest during the day or to lay eggs.
Risks & Benefits
Generally considered harmless to humans. While they can bite if provoked or threatened, their venom is not considered medically significant, causing only mild, localized pain and irritation similar to a bee sting. They are beneficial for pest control as they prey on various insects.
Identified on: 10/6/2025