Difference Between Sydney Funnel-Web Spider and Brazilian Wandering Spider

Sydney Funnel-Web Spider vs Brazilian Wandering Spider

Sydney funnel-web spider and Brazilian wandering spider are categorized among the top five deadliest spiders in the word. The other three spiders include wolf spider, black widow spider and recluse spider. Both funnel-web spider and wandering spider are considered as the most dangerous even among the other deadliest spiders because they possess longer fangs and more quantities of venom. Thus, these two types of spiders are able to inject their venom to greater depths in larger quantities.

Sydney Funnel-Web Spider

Brazilian Wandering Spider | Difference Between

The scientific name of Sydney funnel-web spider is Atrax robustus. These creatures are extremely venomous and are among the most deadly spiders in the world. As the name implies these spiders build funnel-shaped webs and live within a range of 100 mile radius of Sydney city, Australia. Funnel- web spiders prefer moist or damp areas and build their burrows near houses.

Sydney funnel-web spiders are large, black spiders with hairy legs and smooth bodies. Female spider grows up to about 2 inches long, whereas a male spider a bit smaller than a female. Their venom contains a compound called atraxotoxin. A female Sydney funnel-web spider can lay about 100 eggs. Once she laid her eggs, she wraps the egg from egg sacs in order to protect them. It takes about three weeks to hatch the eggs. Once they hatch, the spiderlings remain in the egg sacs for a while until they molt their outer shells. After they molt, they stay with their mothers for the first few months and subsequently leave to make their own burrows.

Brazilian Wandering Spider

Brazilian Wandering Spider Difference Between

The scientific name of Brazilian wandering spider is Phoneutria fera. The Brazilian wandering spiders are mainly found in Central and South American regions. These creatures are considered as one of the most venomous spiders in the world. They are called wandering because they wander at night, searching for some small prey including mice, lizards and insects. During the day time, they hide in dark places.

An adult Brazilian wandering spider grows up to 1 inch long. They have red hairs on their body, which is more distinctive. Brazilian wandering spiders are very aggressive so that they can strike instantly. In a single bite, they can inject up to about 8 mg of venom, which is enough to kill 300 mice. However, there are very few human deaths reported due to the bites of Brazilian wandering spiders. At present, anti-venom has been developed for bites of these spiders. Brazilian wandering spiders usually adjust the amount of venom depending on the size of the prey or predator.  At certain times, they do not inject venom when biting, hence called dry bites. When hunting, they do not rely on their vision, but their vibrations. They have unique warning sign, where they lift their front legs and swing back and forth before the attack.

What is the difference between Sydney Funnel-Web Spider and Brazilian Wandering Spider?

• Sydney funnel-web spiders are only found in the areas, in the city of Sydney, Australia, whereas Brazilian wandering spiders are found in Central and South America.

• Sydney funnel-web spiders are normally larger than Brazilian wandering spiders.

• Sydney funnel-web spiders are black with hairy smooth bodies, whereas Brazilian wandering spiders are brown in color with red hairs on their body.

• Brazilian wandering spiders are more aggressive than Sydney funnel-web spiders.

• Unlike Brazilian wandering spider, which delivers occasional dry bites (without venom), Sydney funnel-web spiders always deliver bites with venom.

• The scientific name of Sydney funnel-web spider is Atrax robustus while that of Brazilian wandering spider is Phoneutria fera.

• Unlike the Brazilian wandering spiders, Sydney funnel-web spiders build funnel web to live.

• Venom of Brazilian wandering spiders contains Phoneutria nigriventer toxin-3 (PhTx3) as the main compound whereas, that of Sydney funnel-web spider is atraxotoxin.

  • Greg Grehan

    Where do the other funnel-webs fit in the picture… Hadronyche infensa, hadronyche formidibilis etc.? The venom of formidibilis is said to be more toxic than atrax robustus. Not to mention that little is known of the toxicity of Australia’s missulena bradleyi and missulena occatoria (both capable of dry biting), but said to have venom as toxic as the funnel webs.