Beware, this list is not for those with intense arachnophobia. If you’re wondering which spiders in the world pose the biggest threats to humans look no further. We have gathered a list of the deadliest creepy crawlers known to mankind. So, after reading you better check your health insurance because you never know when you’ll come across one of these eight-legged critters!
White Widow Spider
The deadly white widow can be found throughout the Middle East, Central Asia and North Africa. It’s also known as the white steppe spider. Watch out, their bite is venomous! Though, not as toxic as some of our next spiders, their bite can kill kids and the sick. Luckily, this species is pretty rare. Whew! Guess you can take a gamble on your health insurance so far. Next up, we have some pretty scary ones even in the same family!
White Widow Spider
Redback Spider
Next, we have a relative of the black widow, which we will be getting to soon! Again, the species is not very common though it’s native to Australia and more recently New Zealand. If you’re in Australia, beware since they often nest in homes. Though, they are not typically aggressive, the female spiders tend to bite when defending their eggs. They also bite when inside of shoes or clothing, and they become trapped while someone is getting dressed. The redback is venomous, but only about twenty percent of victims bitten are envenomed. Over 250 bites from this deadly spider are treated annually in Australia.
Redback Spider
Red Widow Spider
Also known as the red-legged widow, the red widow can be found in Florida. Like our last spider, they are not traditionally aggressive towards humans, but they bit if inside clothes or shoes or when protecting eggs. Once bitten, the victim will feel cramping, pain and even nausea. Fortunately, death is rare since this deadly venom is injected in such small doses. Yet, eldery, sick and children are still at risk of death from the red widow’s bite.
Red Widow Spider
Brown Widow Spider
Found across countries worldwide such as Japan, South Africa, Australia and even part of the US, this spider lives in old tires, among vegetation and inside of buildings. Twice as venomous as our next spider, the brown widow has killed in Madagascar in the nineties. As previous listed spiders, this species is not aggressive and only injects a small amount of its venom. So, maybe my health insurance will do just fine!
Brown Widow Spider
Black Widow Spider
With more than two thousand hospital visits annually for black widow bites in the US, I’d say humans definitely need to be cautious of this spider. You can find them among vegetation or woodpiles. Thankfully, the invention of the widow spider antivenom has prevented deaths. Though, getting care is crucial because their venom is speculated to be fifteen times stronger than the rattlesnake’s venom! Again, they pose the most lethal danger to children, sick and elderly people.
Black Widow Spider
Wolf Spider
Although not fatal, it is crucial to seek medical attention if bitten by the wolf spider. They inject their venom when threatened. There are over 125 species of the wold spider in the United States alone and about fifty in Europe. Just their hairy appearance and strange eyes alone are enough to send me to the hospital! Unsurprisingly, they got their name from an early belief about the wolf-like way they hunt for prey in groups. Actually, since they are busy hunting for food, they are not known to spin webs.
Wolf Spider
Yellow Sac
Be careful when prancing around the grass because the yellow sac lives in leaves, grass and underneath stones! You can find this species in North and South America and sometimes indoors as well as outside. Their venom impairs cell function or destroys it. Commonly, you find redness and swelling in reaction to their bites, in addition to incredible pain. Unless you have an allergy to the venom, you will live through this pain to tell the tale, but you don’t want to take your chances on whether you have an allergy to this aggressive spider. Interestingly enough, the yellow sac enjoys the smell of gasoline. In fact, Mazda recalled over 50,000 cars in 2011 when yellow sacs were building webs inside of the emissions!
Yellow Sac Spider
Brazilian Wandering Spider
Perhaps, the most poisonous to people, the Brazilian wandering spider can be found in fruit, especially on banana leaves, and flowers. Actually, the venom is so poisonous because it’s toxic to your nervous system. As active hunters, these spiders travel frequently and crawl into comfortable places for the night. Thus, when alarmed maybe from a disturbance by a human, they tend to bite for their own protection. Whether they inject their deadly venom depends on if they’re hurt or how threatened they feel.
Brazilian Wandering Spider
Brown Recluse Spider
Well, if you thought things couldn’t get worse after the Brazilian wandering spider, think again! Next up, we have one of the most dangerous spiders in the United States. A bite from this spider will destroy your blood vessels’ walls, create an ulcer and subsequent wound that may take months to heal and that’s the better outcome. If the bite gets infected it can lead to death. The brown recluse spider is also known as a violin spider. They’re found not only in caves and nature but attics, storage areas, the wall and ceiling voids or shoes, clothing and beds. Their bite is extremely venomous, and they pose the most deadly threat to children.
Brown Recluse Spider
Six-Eyed Sand Spider
A cousin to our last spider, the six-eyed sand spider can be found in sandy places like the desert, mainly in Africa and South America. Lucky for us, they rarely bite humans. With only two suspected human cases of bites from them, experts turned to experimentation to find out more about the venom. Apparently, their venom will destroy tissue and organs while it eats away at flesh and then the toxin spreads to the liver and kidneys. All of this surely leads to death. At the time, no antivenom exists. If that discovery isn’t enough to scare you, did you know that experiments found their venom lethal to rabbits within five to twelve hours?
Six Eyed Sand Spider
Chilean Recluse Spider
Closely related to the brown recluse, we have the venomous Chilean recluse spider. Another name for this species comes from Spanish and translates to corner spider. Considered the most dangerous of recluse spiders, the bite from a Chilean recluse will result in severe reactions that may lead to death. Unfortunately, there is not much more data on this deadly recluse, but we are not volunteering to research!
Chilean Recluse Spider
The Northern Funnel Web Spider
The northern funnel web spider is one of the most poisonous on the globe! Found in Australia, this deadly crawler grows up to three inches long and typically resides in trees. Though, they are attracted to water and thus, many humans find them in their pools. Beware before you scoop them out, if antivenom is not close an encounter could be deadly. It only takes minutes for the venom to kill a person!
Northern Funnel Web Spider
Sydney Funnel Web
Here, we have another deadly Australian spider. The Sydney funnel web are very aggressive when provoked. Therefore, humans are cautioned to never approach. Every bite injects venom and they typically strike multiple times. Thirteen people died due to bites from this spider between 1927 and 1980. Fortunately, an antivenom was developed in 1980. Though, for small children in which venom will be concentrated at much higher rates, this spider still poses an immense threat.
Sydney Funnel Web Spider
Hobo Spider
The true nature of its venom is still being debated. That’s why we felt it was important to include the hobo spider. With a nickname like the aggressive house spider, it’s easy to see why people may mistakenly believe the hobo spider to be the most dangerous. One theory is that the nickname originates from a misinterpretation of the Latin name agrestis, which means of the fields. Actually, the spider only bites when forced to protect themselves. Though, it is not confirmed whether necrosis occurs from their bites. Luckily, the spider rarely enters human homes and instead resides in fields, thus it is not common for them to come in contact with humans. So, we hopefully won’t have to test out how deadly this bite truly is!
Hobo Spider
Black House Spider
The symptoms from a black house spider bite besides pain includes muscular pain, vomiting, headaches and heavy sweating. Luckily, their poisonous bites are not typical lethal. Despite the low lethal risk, you must seek medical attention as soon as possible! Up next, we have a very hairy critter whose name sends chills down many spines.
Black House Spider
Fringed Ornamental Tarantula
Found in the hot and humid climate of Sri Lanka, the fringed ornamental tarantula or ornate tiger spider has what is considered a medically significant bite. AKA, please seek help immediately if bitten. There have not been any recorded deaths, but you don’t want to be the first! Their venom causes intense pain and cramping and their known to move fast. Don’t corner them because they attack if put in that position!
Fringed Ornamental Tarantula
Mouse Spider
The mouse spider lives in Australia and is known for its large fangs. Spooky! Indeed, they bite if provoked. Some of the species’ bites produced symptoms similar to the funnel web spider. Though, they are typically less aggressive than the funnel web. Actually, if you’re lucky you’ll get a dry bite without venom! Um, we’ll take no bites, is that an option?
Mouse Spider
False Widow Spider
Just when you thought we covered all the widow spiders, we got another for you! Apparently, the false widow is the most venomous of spiders found in England. The site of a bite can swell as big as a tennis ball. Thankfully, only one death has been recorded from this spider thus far. Though experts are still debating how deadly the false widow’s venom is in reality.
False Widow Spider
Katipo Spider
Due to it being endangered, you probably won’t come across this New Zealand dwelling spider. The katipo is actually another member of the widow spider family. Just like other widow spiders, the bites are not only painful but at times fatal. FYI, only females can bite since the fangs of a male are too small to puncture someone. So, try to avoid females? Yeah, sorry that’s the best preventative advice we got for you!
Katipo Spider
Southern Tree Funnel-Web Spider
Along with its relatives that we covered, this Australian spider is one of the most dangerous of its species. If you didn’t already guess, they live in the trees. Around half of the bites they inflict result in severe envenoming. Probably, not the kind of odds I would bet on.
Southern Tree Funnel-Web Spider