Arachnids
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![A close-up photo of a Brazilian wandering spider.](https://cdn.mos.cms.futurecdn.net/iWJuC3RLTnt77KuVopEWq4-320-80.jpg)
Brazilian wandering spiders: Bites & other facts
By Jessie Szalay last updated
Brazilian wandering spiders don't build webs but crawl on the forest floor at night in search of prey, which they kill with neurotoxic venom.
![A giant huntsman spider crawling over rock.](https://cdn.mos.cms.futurecdn.net/DZUvGjjLnPfuoUx68cW9XH-320-80.jpg)
Giant huntsman spider: The world's largest spider by leg span
By Jessie Szalay, Ailsa Harvey last updated
Reference Giant huntsman spiders are the largest member of the huntsman spider family Sparassidae with a leg span stretching up to 12 inches across — roughly the size of a dinner plate.
![close up of a brown recluse spider's face](https://cdn.mos.cms.futurecdn.net/BTHgA55HnuYbT6R9prvddH-320-80.jpg)
Brown recluse spiders: Facts, bites & symptoms
By Laura Geggel last updated
Reference Here's what to know about brown recluse spiders and how to avoid getting bitten by them.
![A close-up look at a joro spider in its golden web](https://cdn.mos.cms.futurecdn.net/DvigrKNu5PGHfYoQUeszHn-320-80.jpg)
Giant, invasive Joro spiders with 6-foot webs could be poised to take over US cities, scientists warn
By Harry Baker published
A new study shows that invasive Joro spiders are surprisingly "urban tolerant," which could enable them to take over cities and other urban areas across the U.S. East Coast.
![Silhuotte of a Water Spider (Argyroneta aquatica) in underwater air bell.](https://cdn.mos.cms.futurecdn.net/8wTBnZMknHqJi7aQ2sUGCQ-320-80.jpg)
Diving bell spider: The only aquatic arachnid that creates a web underwater to live in
By Megan Shersby published
Diving bell spiders are also weird when it comes to sex, with males occasionally gobbling up females in reverse sexual cannibalism.
![A large black funnel web spider on a white background with a coin to illustrate its size.](https://cdn.mos.cms.futurecdn.net/hxDPZoHQm7PM8oKrrNL27f-320-80.jpg)
Deadly male funnel-web spider 'Hercules' breaks record as biggest ever discovered
By Stephanie Pappas published
"Hercules" the funnel-web spider is the largest male of the species ever found.
![Hairy tarantula facing the lens with front 4 legs posed in the air](https://cdn.mos.cms.futurecdn.net/gKCcf6US6KxvYU5GNUXbuQ-320-80.jpg)
Why are tarantulas so hairy?
By Elise Poore published
Tarantulas use their "hair" for all kinds of things, including smelling and tasting.
![Austropallene halanychi is a newly discovered species of sea spider found off the coast of Antarctica.](https://cdn.mos.cms.futurecdn.net/75SXZ4awZNjDVGTAQeMAQ3-320-80.jpg)
Newly discovered Antarctic sea spider with 'boxing glove' claws pulled up from ocean floor
By Ethan Freedman published
A newly discovered species of sea spider was pulled up from more than 1,800 feet below the surface of Antarctica's Ross Sea.
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