What are funnel-web spiders?

Funnel-web spiders, scientifically known as Agelenidae, are a family of spiders characterized by their distinctive funnel-shaped webs. The name "funnel web" is derived from the shape of their webs, which often resemble miniature funnels. Several subspecies of these spiders exist, each adapted to different environments. These arachnids help control insect populations, preventing potential outbreaks that could harm crops, but this spider species can be challenging to control for homeowners.

What do funnel-web spiders look like?

Funnel-web spiders are generally medium-sized spiders with brown or grayish coloration. They have a distinctive, elongated body shape with a prominent abdomen. These spiders possess eight eyes arranged in two rows on their cephalothorax (head region). They also have two prominent fangs that inject venom into their prey. These pests have silk-spinning organs located on their abdomen, which they use to create their intricate webs.

Where funnel-web spiders live

Although these spiders can thrive in various habitats, they prefer moist, shaded environments. These conditions provide the ideal setting for their web construction and the insects they prey upon. Globally, funnel-web spiders are predominantly found in Australia, specifically within the Sydney region, where the infamous Sydney funnel-web spider, a highly venomous species, resides. In the U.S., species of this spider prefer habitats ranging from grasslands to suburban areas, particularly with enough moisture and shelter to support their web-building activities.

Funnel-web spider behavior and diet

Primarily nocturnal hunters, funnel-web spiders utilize their well-engineered, funnel-shaped webs to trap prey. The spiders wait patiently at the narrow end of the funnel for vibrations signaling the arrival of prey, which typically includes insects and other small arthropods. Upon detecting these vibrations, they swiftly emerge to capture and immobilize their prey with a quick venomous bite. These spiders can live for several years, with females generally living longer than males.

Are funnel-web spiders dangerous?

Funnel-web spiders, particularly the Sydney funnel-web spider, are among the most dangerous spider species in the world due to their potent venom. Some species’ venom can cause severe medical conditions and, in some cases, may be lethal if not treated promptly. However, the types predominantly found in the United States are generally not harmful to humans.

How to help prevent spiders in your home

When it comes to managing and preventing spider infestations, it's essential to recognize the right time to call in professional spider control services. If you notice a significant number of webs around your property and spot spiders frequently inside your home, it’s time to consult an expert.

At Terminix, we understand the risks and nuisances posed by these arachnids. Our spider control services help eliminate these pests and prevent future infestations. For year-round protection from spiders, and up to 39 other household pests, try one of our PestFree365 plans¹.

¹Service frequency will vary based on geography. Covered pests defined in your plan. Automatic payment sign-up is required for PestFree365+. Voles and fire ants are only covered if they are in the home; we will not treat the lawn. Homes must be free of bed bugs at the initial service to qualify for coverage of bed bugs under the PestFree365+ Plan. Applies to single-family, free-standing, owner-occupied homes only. Account must be in good standing. Other limitations may apply. See plan for details.