Large & Fast • Basement Invader • Often Mistaken for Tarantulas

Wolf Spider – Connecticut Identification & Indoor/Outdoor Behavior Guide:

Wolf spiders are one of the largest and most intimidating spiders found in Connecticut homes, especially during the fall months. While their size can cause alarm, wolf spiders are non-aggressive and beneficial predators. They do not spin webs indoors—instead, they hunt for prey, which is why they are often found in basements and garages.

Identification:

• Size: ½–1 inch (body); leg span 1.5–3 inches
• Color: Brown/gray with camouflage pattern
• Eyes: Two large forward-facing eyes; excellent night vision
• Shape: Stout and thick-bodied
• Movement: Fast, sudden bursts of speed

Wolf spiders look dangerous but are harmless to humans.

Behavior & Habitat:

Unlike web-building spiders, wolf spiders:

• Chase prey on foot
• Hide under boxes, debris, and storage items
• Wander indoors during cold nights
• Prefer ground-level areas

Common locations in Connecticut homes:

• Basements
• Garages
• Laundry rooms
• Sheds

Why Wolf Spiders Enter Homes:

• Temperature drops (Sept–Nov)
• Moisture and humidity
• Following insect prey
• Gaps in foundation or basement windows

Wolf spiders often enter by mistake while hunting insects.

Are Wolf Spiders Dangerous?

No.
They are NOT aggressive and rarely bite.

A bite may cause:

• Mild swelling
• Redness
• Itching

But no severe reactions.

When to Call a Professional:

If wolf spiders are appearing frequently indoors, it often signals another pest problem (their food source).

• Spider Control CT 
• Moisture Pests 
• Pest Prevention