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Spiders in New York -  Facts, Identification, and Control

Scientific Order: Araneae

Common Species:

  • The Common House Spider or American House Spider (Parasteatoda tepidariorum)

  • The Barn Spider (Araneus cavaticus)

  • The Yellow Garden Spider (Argiope aurantia)

  • The Common American Grass Spider (Agelenopsis actuosa)


  • Size: Spiders range in body length between .02 to 3.5 inches. Most are smaller than an inch.

  • Color: Spiders are most commonly a mix of brown and black but there are species with red, green, yellow, and even blue coloring.

Spider Pest Control

Signs of a Spider Infestation

The easiest way to spot a spider infestation in your home to look for their webs. Check the upper corners of any areas that tend to be dark and damp, as spiders enjoy those types of environments. Spiders build webs around insect thoroughfares, where they're most likely to catch prey. You might see cobwebs around door frames, window wells, baseboard, storage containers and materials, or vent systems.

Different species of spider build different types of webs, but they all have several common characteristics. If webs fall down, you may see them in clumps around the floor in basements, crawl spaces, or warehouses. Spiders also tend to build webs in areas where they won't be disturbed, so look for them in out-of-the-way places.

Spider Pest Control and Prevention

Spiders enter homes most commonly through open windows and doors or through cracks around similar entry points, so a great way to keep them out is by making sure all outdoor cracks are properly sealed as soon as they’re spotted. Spiders come inside looking for prey, which means if you have an existing pest problem it can easily develop into a spider problem as well.

Removing vegetation from the perimeter of your business and maintaining indoor tidiness will help make it harder for spiders to access your business or hunt for food near it. You should also vacuum up any cobwebs you find as soon as you find them, and throw out the vacuum bag when you're finished. The tougher you make it for spiders to establish themselves near you, the less they'll want to.

Spiders in New York - Facts and Identification

Behavior and Diet

Most spiders prefer dark, damp areas places like basements, garages, or outdoor piles of wood and brush. They build webs in shaded places like cracks, corners, and window and door frames. Most common spiders remain close to their webs to monitor for prey, but may also seek shelter or hiding places nearby. 

Spiders are carnivorous, and mostly only eat living or very recently killed prey. Their usual food source is insects. All spiders have spinneret glands and the ability to create webbing, but not all spiders build webs. Most spiders hunt by catching prey in their webs, but some spider species use their venom and natural agility to hunt instead. 

Reproduction and Life Cycle

Specific reproductive and life cycle details depend largely on species. Once fertilized, most females can lay up to 3,000 eggs in one or more silken egg sacs during a single reproductive cycle. New hatched spiders, or "spiderlings," look like smaller versions of the adult spider.

Most mother spiders personally care for their brood after birth until their children are fully grown. Spiderlings remain on their home webs and even occasionally latch onto the mother for protection and guidance. When spiderlings are fully grown they leave the web to seek mates or build webs of their own. Most adult spiders can live for a year or longer.

Other Characteristics

  • All species of spider are characterized by their eight legs, dual-sectioned bodies, and lack of both wings and antennae.

  • Spiders typically have three to four sets of eyes on their heads. 

  • There are two relatively common breeds of spider that could pose a serious risk to human health. They are the Black Widow and Brown Recluse spiders. Both of these spiders have highly venomous bites. If you think you see a Black Widow or Brown Recluse, contact Assured Environments right away.

More Information

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