The Australian funnel-web spiders are among the deadliest spiders in the world in the effect their bites have on humans and our primate relations (although the bite has little effect on dogs and cats). There are many species of funnel-web spiders in Australia but only male Sydney Funnel-webs have caused human deaths.
Sydney Funnel Web Spider
Found nearly exclusively in Sydney, this spider is often considered the most deadly in the world. With fangs that can pierce through fingernails, and one specimen reaching 10cm stretched out, this spider is serious business. A single bite can kill a human in 15 minutes.
The Sydney funnelweb spider Atrax robustus, is considered to be the world's most dangerous spider. It is found within a 100 km diameter circle around Sydney. No deaths have occurred since the advent of an antivenom in 1981.
The funnel web spider is widely regarded as the most dangerous arachnid. This Australian spider has a venom that is packed with 40 different toxic proteins. Though a bite from one of these creatures is certainly capable of killing a human, no deaths have been reported from a funnel web spider in Australia since 1980.
Sydney funnel-web spider. According to the Guinness World Records, the Sydney funnel-web spider, Atrax robustus, is the most dangerous spider to humans in the world.
Spiders are found on every continent in the world except for Antarctica.
There have been no deaths in Australia from a confirmed spider bite since 1979. An effective antivenom for Redback Spiders was introduced in 1956, and one for funnel-web spiders in 1980. These are the only two spiders that have caused deaths in Australia in the past.
That is quite the sight, but picture this — millions of tiny spiders raining from the sky. While it can sound like something out of a horror movie, in Australia the transition from late summer to fall can trigger what is known to the locals as spider season.
These spiders are venomous but have very mild venom which is not considered dangerous to humans. Most are very reluctant to bite, and will attempt to run away from any threats they encounter. Contrary to popular belief, huntsman spiders do not chase people. They do not see like we do, and cannot see us from a distance.
They can bite you, but they won't do any harm. "Huntsmen are super fast but they get confused, so if a huntsman is running towards you, it's confused. They're not aggressive spiders at all and they generally stay high up because that's where they're finding the food they want to eat."
In Australia they are only found in the southeastern part of the country, from South Australia to Queensland via Victoria, New South Wales and Tasmania. You won't find them in the dry and arid zones. On the other hand, huntsman and wolf-spiders are found all over the country.
Atrax robustus, also known as the Sydney funnel web spider, has venom so potent, it can kill in just 15 minutes.
… and is native to Australia. The giant green-bellied huntsman (Typostola barbata) wears yellow eyeshadow, has pins to die for, and births hundreds of fluorescent mini-mes.
Danger to humans
Black House Spiders are timid animals and bites from them are infrequent. The bite may be quite painful and cause local swelling. Symptoms such as nausea, vomiting, sweating and giddiness are occasionally recorded.
Traralgon in eastern Victoria has been swamped by vast, other worldly sheets of web as spiders climb to higher ground following the disruption of heavy rain.
The area will often show swelling and will generally be quite painful. It's common to sweat profusely after a Redback bite. Within around 30 minutes, the pain and swelling from the bite will often have spread throughout the body. And after an hour or so, headaches, nausea and vomiting are also typical symptoms.
“If spiders disappeared, we would face famine,” says Platnick, who studies arachnids at New York's American Museum of Natural History, where a live spider exhibit debuted last month. “Spiders are primary controllers of insects. Without spiders, all of our crops would be consumed by those pests.”
Humans need spiders to survive. It is important to remember that spiders and other invertebrates – animals without spines – make up 98% of animal species. They are vital to the functioning of ecosystems; without them, the remaining 2% of vertebrates, including humans, could not survive.
They are smallish spiders, up to 4 mm. This spider is usually found on the lower trunks of trees, particularly Beech. It spins a very fine web which is almost invisible to the naked eye.
They do not have venom glands, fangs or any other mechanism for chemically subduing their food. Therefore, they do not have injectable toxins. Some have defensive secretions that might be toxic to small animals if ingested.
We found that perceived fear and disgust of spiders were triggered predominantly by enlarged chelicerae, enlarged abdomen, and the presence of body hair. Longer legs were associated with perceived fear as well; however, the presence of two eyes did not produce any statistical significance in terms of fear.
Are spiders afraid of humans? Yes. This is why spiders are most commonly encountered in seldom used areas such as garages, attics, basements, closets, or guest rooms. Spiders are antisocial and try their best to avoid human contact.