Funnel Weaver Spider Identification

A family of fast, striped spiders that build sheet webs with a tube-shaped retreat in corners, window wells, and woodpiles. The grass spider is the common lawn member; barn funnel weavers are the ones you find in basements.

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How to Identify It

Striped brown-and-tan body, long legs, and prominent spinnerets. The web is the identifier: a flat sheet with a funnel the spider hides in, in a corner or against a wall rather than out in the open.

Size: Body 8–20 mm

Commonly Confused With

Wolf spiders (no web) and brown recluse (no web, no stripes). The hobo spider of the Pacific Northwest is a funnel weaver; it does not occur in Kansas City.

Why It Shows Up

Undisturbed corners with insect traffic: basement window wells, behind stored items in the garage, and around crawlspace vents.

Where Homeowners Find It

Basement corners, window wells, garage floor edges, under decks, and in woodpiles and stone walls.

Seasonal Activity in KC

Year-round in basements; most obvious in late summer and fall.

Risk Level

None significant. Fast and startling, but not dangerous.

What You Can Do Yourself

• Vacuum the funnel webs and reduce clutter along basement walls.
• Move firewood and stored items off the ground and away from the house.

What Professional Treatment Involves

Covered by a general spider service: web removal, crack-and-crevice treatment at the base of walls, and exterior perimeter treatment.

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Common Questions

How do I tell a funnel weaver spider from something that looks similar?