Domestic House Spiders

Scientific Name

Tegenaria domestica

Appearance

What Do They Look Like?
  • Size: Domestic house spiders are medium-sized compared to other spiders. The females are about 1/4 - 1/2 inch long, excluding their legs, and the males are about 1/4 - 3/8 inch long.
  • Color: These spiders vary from gray-brown to dark brown in color and have banded legs. The cephalothorax has two dark colored stripes, and the top of their abdomen has a pattern of brown and light-beige spots.

How Did I Get Domestic House Spiders?

The domestic house spider inhabits dark corners. These pests hide in the shadows to create webs and trap their prey. Homes with poor weather-stripping or cracks leading into garages and outbuildings are prone to a domestic house spider infestation.

How Serious are Domestic House Spiders?

Are They Dangerous?

Domestic house spiders are very fast and will more often than not move away quickly during an encounter with the homeowner. However, if one of these arachnids has no possible avenue of escape, they might bite, although documented cases of domestic house spider bites are extremely rare. If bitten, the symptoms may include slight pain, swelling, and itching.

Because they rarely bite, the arachnids are mostly a nuisance. Domestic house spiders have a similar body shape and color to venomous brown recluse spiders, so their presence in the house can cause anxiety. If you see a spider that you think could be a brown recluse or another species that may create a health effect from its bite, contact your Orkin specialist for an accurate identification and recommendations to prevent the problem.

Signs of Infestation

This pest rarely produces enough individuals to develop an infestation, even though the presence of spiders inside usually causes alarm and a desire to exercise some spider control efforts.

How to Get Rid of Domestic House Spiders

What You Can Do

Sealing all cracks, gaps and crevices that provide access inside the home; using a vacuum or broom to remove spiders, webs and egg cases; and limiting the domestic house spider’s food sources and harborage sites are important prevention measures.

What Orkin Does

Should the homeowner need assistance to control of the domestic house spider, contact your pest management professional and request an inspection. Your pest management professional can then use his or her inspection findings to prepare a comprehensive pest management plan that will effectively and efficiently deal with the specific pest problem.


Behavior, Diet & Habits

Tegenaria domestica is called the domestic house spider, the common house spider, the barn funnel weaver spider and the lesser European house spider.

Where Do They Live?

These spiders can be found in structures anytime during the year and are very common in buildings or other manmade structures. Domestic house spiders are more likely seen during warm weather months since the males are on the move seeking females with whom to mate. Some common areas include:

  • Barns
  • Cellars
  • Dark basement corners
  • Storage sheds
  • Under rocks
  • Wood piles
What Do They Eat?

The domestic house spider’s food sources are small insects that they trap in their web.

Geographic Range T. domestica is common throughout all of North America.

Reproduction

Domestic house spiders can live for as long as seven years, producing upwards of nine egg sacs before re-mating. The spiders place their egg sacs close to the web and often hang them from above with threads of their silk. The males and females are usually together in the web from May through July, the normal mating season.