Spiders are important predators. By one estimate, the spiders on one acre of woodland alone consume more than 80 pounds (36 kg) of insects a year. (Those insect populations would explode without the predators.)
Spiders employ an amazing array of techniques to capture prey.
They play tricks:
Some pirate spiders of the family Mimetidae fool their prey: other spiders. They vibrate the spiders’ webs the same way a struggling insect might. Then, when the host spiders come close, the pirates grab them.
Spiders of the genus Scytodes catch prey by ejecting a glue from their chelicerae (spider mouthparts that end in fangs and inject venom into prey). Once it hits, the gooey substance shrinks, trapping the prey in place.
They use a home field advantage:
Lynx spiders of the family Oxyopidae hunt on plants. They are agile, jumping from stem to stem, and have better vision than many other spiders.
Learn more spider hunting techniques on our blog.