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A spider web, spiderweb, spider's web, or cobweb is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally.
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Read the full article. Start your free trial. Environment Television Education. Want to read more? Subscribe now and get unlimited digital access on web and our smartphone and tablet apps, free for your first month. You are currently logged out. Log in Register. Everyone knows spiders can help keep pests under control, but to some people, spiders and their webs are the pests.
To them, allowing webs to linger is the sign of a messy house. Most will clear spider webs and cobwebs out of unused areas and sweep them from corners. Aside from the cleanliness issue, spiders can be dangerous. Other spider bites can result in rashes and other skin irritation. Certain web types, for example, can indicate the possible presence of a dangerous spider. With such information, you will also know to set out spider traps or to treat an area with spider killing spray , both of which can help you get rid of spiders — whether they are dangerous or not.
Some spiders look a lot like other, more dangerous spiders. This orb weaver spider, for example, has a fiddle-shaped marking that some people may mistake for a hobo spider. However, hobo spiders don't spin these types of webs! Spider species use their webs to hunt in different ways, so location is key to capturing a meal.
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When observing a spider web, take note of where the web is placed, because that can help you with its ID later on:. In general, there are five main types of bait-style webs:. To do so, note these web characteristics:. With these characteristics in mind, use a spider identification guide to help you determine the species.
You could also consult a local exterminator or an arachnologist for further assistance. Bear in mind though that spiders, as well as insects, can be very hard to identify in the wild.
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You may only be able to determine its general family or genus rather than identifying the exact species. Of course, there are some spiders that have distinct web styles. A large black-and-yellow arachnid, the yellow garden spider Agriope aurantia , shown above spins a web in open areas and creates the familiar spider web pattern, but adds its own twist to the classic design. The purpose of this added touch is disputed — some say it warns birds to avoid flying into the web, while others say it hides the spider from insects. These spiders are not aggressive and rarely bite.
The black widow spider Latrodectus mactans , shown above weaves a tangled web to catch its prey, and once ensnared, the spider wraps it and bites it to inject its venom. After the venom takes effect, the spider carries its meal to a concealed area for consumption, so you may not see the black widow immediately. Black widow bites from mature females pose a serious threat to people, though deaths from their bites are exceptionally rare.
The Engineering Marvels of a Spider’s Web
Spinning a horizontal web, the venusta orchard spider Leucauge venusta , shown above is a long-legged arachnid with vibrant colors. We have noticed that there is an issue with your subscription billing details. Please update your billing details here. Please update your billing information. The subscription details associated with this account need to be updated.
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