Spider webs are designed to do one thing: catch prey. The size, design, location, and orientation of the web all conspire to capture certain kinds of prey. Not all webs are sticky. Some are made of tangled silk charged with static electricity. “Ladder” webs built by some tropical orb weavers are designed to catch moths. A moth impacts the top of the web, but its slippery wing scales allow it to roll off. The spider’s web is so long, however, that eventually the moth loses most of its scales and is eventually stuck by the time it reaches the bottom of the web. Net-casting spiders in the family Deinopidae suspend themselves over “trails” frequented by insects, and hold a small rectangular web between their front two pairs of legs. When an insect passes underneath, the spider launches itself like a bungy-jumper, sticking the bug to the web and yanking it off the ground. Spiders can even be identified, in many cases, from the kind of web they weave.
General Spider Questions
- What is a spider?
- How do I identify a spider?
- What is the world’s largest spider?
- How many eyes do spiders have?
- How long do spiders live?
- How are spiders helpful to people and the planet?
- What kind of animals eat spiders?
- How do spiders produce silk?
- Why do spiders spin webs?
- How do spiders create webs?
- How long does it take a spider to build a web?
- How strong is a spider web?
- Why is spider silk sticky?
- What else do spiders use silk for?
- What is the most venomous spider in the world?
- How do I treat a spider bite?
- What do spider bites look like?