In-Depth Guide To Black Widow Spiders In New Jersey

Are black widow spider infestations common?

What do black widow spiders look like?

Here’s a quick reference guide to help you identify black widow spiders in your home:

• Hourglass Marking: Black widows are easily identified by the distinct red hourglass shape on the underside of their abdomens. This bright red marking acts as a warning signal to predators and potential threats.
• Color: True to their name, black widows have a smooth, shiny black coloration that makes them stand out from other spiders.
• Size: Black widow spiders vary in size, with most measuring between 3 to 10 mm in body length. Females are notably larger than males, often reaching up to 13 mm in body length.
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By familiarizing yourself with these traits, you can better identify and avoid these spiders.

How can I tell if I have black widow spiders in my home?

To spot a black widow spider presence in your home, here are some key signs to look for:

• Messy, Tangled Webs
  Unlike the delicate, symmetric webs we often think of around Halloween, black widows create dense, tangled webs. These webs tend to look chaotic and messy, rather than neatly designed.

• Web Location
  Black widow webs are usually built close to the ground, often in dark or hidden spaces. Check undisturbed areas like basements, closets, garages, and corners that rarely see activity.

• Strength of the Web Silk
  Black widow silk is especially strong. If you pull on a thread, it may actually make a snapping sound as it breaks, unlike the softer silk of other spiders.

• Spider Behavior
  Black widows are reclusive, often hiding above or below the web, waiting for unsuspecting prey. If you spot a black spider hanging upside down in the center of a web, it’s likely a black widow, as this position is characteristic of them.

Remember, black widows prefer to stay out of sight, so it’s wise to check these tucked-away spaces periodically for signs of their activity!

Can black widow spider bites kill you?

One of the most frequently asked questions we get about black widows is, “Are black widow spiders dangerous to humans?” We’re glad to share that while black widow bites can be unpleasant, they’re rarely life-threatening. Black widows prefer to avoid people and will typically flee rather than bite.



Most bites happen by accident—like when a spider gets trapped between a person and clothing or bedding. For instance, if someone picks up a shirt off the floor with a black widow inside or gets into bed with one hiding in a blanket, that’s when bites are more likely.

While caution is wise, knowing these spiders' habits can help prevent encounters and keep everyone safe!

How to look for black widow spiders

Recognizing a black widow spider in or around your New Jersey home is key to staying safe. Fortunately, identifying a black widow is fairly simple. They are jet-black and hairless, with a smooth, shiny appearance. You might spot the classic red hourglass marking on the underside of their abdomen, but even if you don’t, a good rule of thumb is to avoid touching any black, hairless spider. These characteristics can help you distinguish black widows from other, less risky spiders nearby.

What to do if you find a black widow spider in your house

Although black widows aren’t usually eager to stay indoors and might even find their way back outside, it’s wise to have a professional inspection done just in case. A trained pest control expert can determine how the spider got in and, more importantly, offer advice on preventing future black widow visitors.

For help in Toms River and surrounding New Jersey areas, consider reaching out to Resolve Pest Management. We’re here to provide peace of mind and professional support whenever you need it!