10 Biggest Spiders In The World

10 Biggest Spiders In The World

10 Biggest Spiders In The World

Spiders are air-breathing arthropods that have eight legs. They ranked seventh amongst all species diversity of all the orders of all organisms. Spiders don’t have antennae. True spiders have been found in Carboniferous rocks about 318 – 299 million years ago. Spiders use various strategies to capture their prey like sticking the prey to the web and biting with venom. Here is a list of world’s biggest spiders,
10 Biggest Spiders In The World

Biggest Spiders

1. Goliath birdeater

It belongs to the tarantula and is found in the region of Northern South America. It is the world’s largest spider in terms of mass and size. But it is second to giant Huntsman spider by leg span. It generally preys on small birds. Unlike other spiders, females do not eat males during mating. Females in 3 to 5 years and live for 15 to 25 years. Males die just after maturity and live only for 3 to 6 years. Their body colour varies from dark to light brown with faint marks on the body. Female lay eggs from 100 to 200 at a time in the burrows made by them. In threatening conditions, the Goliath birdeater rub their abdomen with hind legs and release hairs which irritate the skin of the opponent.

During the day, they live in burrows and comes out in the night to hunt. Because of poor eyesight, they detect its prey with the help of vibrations on the ground and then pounce on the prey and inject venom with the help of their fangs. They are large and one of the biggest spiders in the world, however, their most common defence is to run their back legs against their tummy which flicks tiny, sharp hairs into the air. Despite their name, they don’t eat birds but love to eat lizards, frogs and small mammals.

2. THE HUNTSMAN SPIDER

They are large long-legged spider measuring up to 15 cm across the legs. These spiders have eight eyes. They are mostly grey to brown with black coloured markings on their body. Though their vision is not Good as compared to other spiders and they could only see approaching objects which are at a closer distance to them. Huntsman spiders do not build webs instead they hunt for food. They are also called wood spiders because they prefer a woody place to live. They live in logs, a loose branch of trees and rock walls. These spiders are notorious and sometimes enter the house and in cars. Female spiders lay up to 200 eggs at one time and guard it for 3 weeks. Generally, Huntsman spider does not come under the category of danger spider. It is one of the biggest spiders in the world.

It is mostly seen in the tree trunks, under bark, beneath stones or on the walls of houses and some of the species live between the hairline cracks of sandstone and granite outcrops. The species love to eat insects, arthropods, small lizards and frogs. The fangs of the species are large enough to hold the food item until it has been immobilised by the spider’s venom. The spider bites can be painful to humans and can cause mild nausea and headaches.

3. BRAZILIAN SALMON PINK BIRDEATER

The species is believed to be the world’s third largest species of tarantula. It is a fast-growing species and spends most of their times outside playing an adult. They are uniform black coloured and once mature they have pink hair all over the body. Mature mails have tibial hooks on the front pair of legs. This hook back’s a female leg during mating. When In threatening conditions, tarantula raises its front leg and try to stop its enemy. If the attacker doesn’t stop here tarantula tries to bite. It is said that tarantula prefers biting in the last situations, else it makes use of urticating hair which if thrown in eyes causes blindness. During breeding season, males drop their sperm onto the female webbed mat. Brazilian salmon pink are very popular in captivity due to their size and appearances.

One of the largest tarantulas in the world can grow upto diameter of six inches during the first year of his life. Talking about the appearance, the species is pink coloured with long salmon-coloured hairs sticking out from their legs, mouthparts and abdomens. The colouration is one of the best and unique way to identify these tarantulas. Also, as the name suggests it not like that they will at only birds, sometimes they attack small birds, however, most of the time they love to eat insects, lizards, frogs and mice.

4. POECILOTHERIA RAJAEI

This species is famous with common name Indian ornamental tree spider found in the Easter and western ghats of Indian Subcontinent. They are elongated species with legs reaching 18 cm in males and 22 cm in females. They are grey coloured spiders with a wonderful complex of black and white stripes and chevron. They show yellow bright spots of colour at the 1st pair of legs at warning time. They usually prefer to feed small flying insects, cockroaches and even a small mouse. The species have venom that has medicinal uses.

5. Sun Spider

One of the largest spiders in the world, Sun spider also famous with names camel spiders, wind scorpions, or solifuges. The largest species grow up to 5-6 inches. It belongs to solifugae an order of animal in the class Arachnida. The largest species can reach up to 12 to 15 cm in length including legs. Many urban legends have stated from their experience that size, ability and potential danger to human from Solifugae are negligible. The body of Solifugae has two tagmata – an opisthosoma and prosoma. Despite their common name they are neither categorised as spider nor scorpions. Solifugae have five legs but only four hind legs are true legs and each leg have seven segments. Solifugae have eversible adhesive organ and they use it to prey flying insects.

Talking about the appearance, sun spider is tan, brown or reddish brown in colour with a hairy body. They are equipped with elongated jaws known as chelicerae and have 4 pairs of long legs with one pair of leg-like sensory organs known as pedipalps exist near the jaw. Additionally known as “wind scorpion” because of the scorpion-like body and its ability to run like a wind. The lifespan of the spider is two years in the wild.

See also:  What To Do If You Find A Red Back Spider?

6. King baboon spider

King baboon spider is found in the east African countries like Tanzania and Kenya. King baboon is borrowing spider which lives in burrows they made on grasslands. These spiders have venom which they use to kill their prey. They feed on insects, lizards, cockroaches, birds and can even kill mice. Unlike other spiders they don’t have urticating hairs then also they can be very defensive. They are slow growing spiders that grow up to 20 cm in leg span. It is the only species from the genus pelinobius. Spider ranges its colour from rusty brown to orange coloured. King Baboon spiders are preyed upon by birds, baboon and other mammals. Adult spiders can be kept in the aquarium which should contain 10-20 Gallons of water, a hidden area and shallow water dish should also be provided.

They are mostly seen in residing in the burrows in the ground with silk at the entrance to detect the vibrations of the passing prey. During the day they hide in the burrows and usually hunt in the night. They love to kill and eat beetles, cockroaches, spiders and even mice, lizards, small snakes and birds with the help of their powerful fangs to deliver a nasty bite. These spiders are quite common and seen in the grasslands of Kenya, Uganda and Tanzania.

7. Tarantula

The tarantula can found in the regions across the earth. Tarantulakept as pets has urticating hairs that can cause irritation to skin and can damage eyes. Tarantula has a long life of 15 to 25 years. It is an invertebrate that relies on an exoskeleton for muscular support. Tarantula size varies from the size of fingernails to as large as a dinner plate. The largest species of tarantula weighs 85 gram and the largest of all Goliath eater in Brazil weighs 170 gram. Tarantula is becoming famous pets. Tarantula is borrowers that live on the ground. Their natural habitats include savanna, grasslands such as rainforest, deserts, scrubland and cloud forests.

Almost all tarantulas are hairy in appearance and have 8 legs and 2 fangs. Despite 8 eyes, they don’t have a good vision and mostly depend on the vibration to detect its prey. They love to eat insects, small lizards and even birds, however, they have a lot of enemies like Snakes, lizards, birds, coyote, and foxes. The species produces silk to mark its area, protect its eggs and hide in nests. The spider has a lifespan of 5-10 years, however, females can live upto 20 years.

8. BRAZILIAN WANDERING SPIDER

One of the scariest spiders, Brazillian wandering is mainly found in the regions of North America and Central America. Phoneturia is a genus of venomous spiders. The genus as a whole is sometimes called a Brazilian wandering spider because they wander in the night at jungles rather than waiting for the victim at their web. Phoneturia is also famous with names like Armed spider and banana spider. The spider in this genus can grow up to a leg span of 12 to 15 cm. To defend themselves they use to raise front two legs and characteristics Colour pattern of their body tells they are in danger. Besides the pain in their venomous bite, it also causes priapism in humans.

The spiders are vest recognized because they stand on the back legs while lifting its front legs. One of the most poisonous animals doesn’t hesitate to attack humans if provoked. They are mostly seen under the rocks during the daytime and love to hunt in the night. They are mostly seen in the highly populated areas of Sao Paulo, Rio de Janeiro, and Espirito Sanito.

9. Grammostola

These are medium-sized spiders native to tropical South America. These spiders come in brown colour with pinkish or orangish-red hairs. They are regarded as beginning species from tarantula family. The Chilean Rose tarantula is a common pet due to its obedient behaviour and its venom being mild. They try to keep themselves dry because they hate being getting dried. It feeds on small invertebrate insects.

They are mostly seen in the desert and scrub regions of Northern Chile, Bolivia, and Argentina and loves to hunt in the night. They love to eat grasshoppers, crickets, moths, beetles, cockroaches and mealworms and sometimes also grab the pinky mouse. The best food for the pets tarantulas are crickets that will be the best source of hydrated nutrition for the tarantula.

10.Cerbalus Aravaensis

A species which belongs to Huntsman spider and can be found in Israel and Jordan. Spider has a leg span of 14 cm which is the largest member of sparaissade In middle East Asia and hence listed as one of the largest spiders in the world. Female are generally bigger in size than males. Males have a body length of 1.85 cm to 2.40 cm while females have a body length of 2.20 cm to 2.65 cm. At night and in hotter summers it is a more active spider. It constructs underground dens with trap-like door and put sand and glue over it in order to make the door disguise from predators.

These are the biggest spiders in the world. Do post your comments.

earthnworld.com

Top 10 Scariest Spiders in the World

Yes! You guessed it right, a spider. Whether you are an arachnid enthusiast or someone suffering from arachnophobia, you definitely cannot deny the dangers posed by certain spider species. Presenting to you, the list of top 10 SCARIEST SPIDERS IN THE WORLD!

SCARIEST SPIDERS

1. BRAZILIAN WANDERING SPIDER

Though these spiders are native to tropical South and Central America, they made their headlines a bunch of bananas were infested with these spiders in Essex! These spiders are agile and pugnacious and unlike most other species, they won’t run away from combat but instead stand their ground. In fact, 60% of all spider bites in Brazil are caused by this poisonous animal species. So, it is best to steer clear of them at a hint of their sight. It is one of the dangerous and largest spiders in the world.

2. SYDNEY FUNNEL -WEB SPIDER

Sydney Funnel-web spider usually found within 100-150 kilometres around Sydney, Australia, is as much aggressive and venomous as the Brazilian Wandering Spider and a single bite from this spider can also be lethal! It is medium to large in size, with a body length ranging from 1 to 5 cm (0.4 to 2 in).

The rare distinction among these and other spider species is that males are more deadly and have very sharp fangs (which is not common among spiders) and are more likely to pounce and attack an enemy whereas the female spiders are comparatively less toxic. Being the most venomous spider in Australia, its venom is twice as strong as cyanide!

See also:  What Does Poison Spiders Look Like?

Talking about the appearance, both males and females are glossy and darkly coloured that ranges from blue-black, to black, to brown or dark-plum coloured. There is a finger-like spinneret at the end of their abdomen with an average leg length of for the spider in general is six to seven centimetres. Along with Sydney, the spider can be seen into the Central Coast and south to the Illawarra region. They can also be seen in the west to the Blue Mountains in New South Wales and moist microhabitats that includes under logs and foliage.

3. BLACK WIDOW SPIDER

The prevalence of sexual cannibalism, a behaviour in which the female eats the male after mating, has inspired the common name “widow spiders”. Though it looks considerably small, it proves that appearances can be deceptive, inflicting a severe bite. Its venom is 15 times stronger than a rattlesnake’s! A single bite can cause extreme sweating, muscle aches, severe pain in the abdomen, hypertension and paralysis of the diaphragm. A lot of pain…all at once, sounds pretty scary, right?

These spiders are widely distributed across the globe and can be composed of both black widow spiders and brown widow spiders. It belongs to the family Theridiidae family and genus consist of 31 species that includes the North American black widows as well. One of the scariest spiders varies greatly in size, however, in most of the cases females are dark-coloured and readily identifiable by reddish markings on the abdomen.

4. GIANT HUNTSMAN SPIDER

This is the kind of spider which gives you the creeps. Huntsman Spiders, usually found in Australia, New Zealand, Southeast Asia, the Mediterranean, Florida and Hawaii and possibly in many other tropical and semi-tropical region has eight scary eyes and by leg span, the Giant Huntsman is considered the largest spider around just barely beating the Goliath Birdeater Spider (which also makes our top ten list).

It has a huge 30 centimetre (12 in) leg span and around 5-centimetre body length (2 in). Its venom is not deadly and it is timid and does not really attack humans but by the bare sight of the spider, you will want to get as far away from it as possible.

Talking about the appearance, the colouration of the species is yellowish-brown with several irregularly distributed dark spots on the rear half. The legs of one of the scariest spiders in the world have wide dark bands before the first bend. Also, the legs are long as compared to the body. The spider species is the largest member of the family Sparassidae and the largest known member of the Sparassidae known prior to the discovery of H. maxima was the Australian Beregama aurea (L. Koch, 1875) with a body length of about 4 centimetres.

5. BROWN RECLUSE SPIDER

These spiders are well known for their appearance and their poisonous bite and are distinguished from the others by the fact that they have six eyes arranged in three pairs. It is the most common and widespread of the brown spiders-which is even scarier because at a single glance, humans cannot distinguish between normal spiders and the Brown Recluse and unlike normal spiders, if bitten immediate medical attention is required without which it causes severe damage and also prove to be fatal- but it is found only in the south and the central United States. Also. read about New Species Of Marine Spider.

The Brown recluse spider usually grows between 6 and 20 millimetres, however, it may grow larger. Also, the colour of the spider species varies in size from light to medium brown and from whitish to dark brown or blackish grey. The markings on the dorsal side of their cephalothorax can be seen with a black line coming from it that looks like a violin with the neck of the violin pointing to the rear of the spider and hence called by different names such as fiddleback spider, brown fiddler, or violin spider.

6. GOLIATH BIRD-EATER

Despite their name, it is uncommon for these species to eat birds and their appetite is usually based on insects, worms and other spiders. The Goliath Bird-Eater Spider is actually one that belongs to the Tarantula group and it is the world’s biggest tarantula and the heaviest spider weighing around a massive 170-200g! The rainforests of South American are the native locations for the Goliath Bird-Eater Spider. They can be very quick and are easily spooked. They are big and scary but are potentially harmless. Their hairs will make your skin very agitated and their fangs are extremely dangerous.

One of the most massive and scariest spiders in the world with a body length that can reach upto 11.9 cm and some of them can even reach a length of 11 inches. As a defence mechanism, they will shoot tiny barbed hairs from their abdomen as a defence mechanism. Also, the species is harmless to humans and only time when they attack humans when they are threatened. If you keep a distance from them, you will be safe.

7. ZEBRA SPIDER

Although these scariest spiders can grow up to only around 7-9mm, they pack a few scary and surprising tricks in their arsenal. These spider species have superb jumping skills and can jump up to almost 20 times their own size! This supersedes the need for them to build webs and they have 4 pairs of huge eyes to locate their prey. The name Zebra Spider is because of the black and white stripes on their back. These spiders are found almost all over the world but mainly in Europe and America. It is very agile and can react very quickly to danger. You wouldn’t want a spider jumping on you now, would you?

8. WOLF SPIDER

Wolf Spiders can be seen almost everywhere in the world and are especially common in grasslands and meadows according to BioKids. They are solitary, nocturnal creatures that prey during the night. They attack when threatened but their toxins are not very harmful and can be treated using the right anti-venom.

9. BIRD DUNG CRAB SPIDER

This spider looks like bird dung that is exactly what it’s going for. Found generally in the forests of South East Asia, these species spend almost the entire day, sitting lifeless almost as if it’s paralyzed which acts as a perfect decoy to catch prey. They have a glossy body and their ability to even smell like poop attracts unsuspecting insects. Once they get closer, it becomes painfully obvious that it isn’t harmless poo after all!

10. HOBO SPIDER

The Hobo Spider is very threatening and rapacious in nature. Mostly found in Europe and parts of Central America, it is right up there with Black Widow and the Brown Recluse spider when we consider what people generally identify them for. But, these spiders best defensive mechanism is to hide and avoid any combat but it does have mild toxic venom which these days, can be cured. These species are widely considered as scary because of the reputation it gets from its appearance alone.

See also:  What Eats White Tailed Spiders?

earthnworld.com

The world’s largest spider is the size of a dinner plate

Most spiders are only a few centimetres long, but a few species have grown far, far bigger

You might think you would notice an eight-legged animal the size of a dinner plate, but in fact many of the world’s biggest spiders are easily overlooked.

In Europe, the Desertas wolf spider is only found in a single valley on the island of Madeira, Portugal. It is one of the world’s largest wolf spiders, with a body length of up to 1.6 inches (4cm) and distinctive black legs with white polka dots.

The family name conjures up fierce and predatory associations, and rightly so. Wolf spiders are named for their active hunting style. Instead of capturing prey in a web, these arachnids pounce on their meals.

Like any self-respecting legendary spider, it lives in a cave

However there are ways in which they differ from wolves. The spiders are solitary rather than pack hunters, so they ambush their prey or chase it down over a short distance. Also, they hunt millipedes, not mammals.

The most distinguishing characteristic of wolf spiders is the layout of their eyes. They have a row of four small ones, with two larger eyes above, topped by another two slightly smaller ones that boost their predatory senses. The Desertas wolf spider’s excellent eyesight allows it to hunt fast-moving beetles and even small lizards.

A similarly remote location is home to one of Asia’s biggest spiders: the giant huntsman spider.

It has a leg span of up to 30 cm (1 foot), which has been championed as the world’s biggest. Like any self-respecting legendary spider, it lives in a cave.

In 2001, Peter Jäger discovered the species in a collection at the National Museum of Natural History in Paris, France, before heading out to Laos to visit its secluded habitat. Why it grows to such a significant size remains something of a mystery.
When approached, a king baboon spider rears up to expose its fangs and hisses loudly by rubbing its legs together

«A straightforward explanation is difficult,» says Jäger, «But I guess one reason in the case of H. maxima is certainly the cave-dwelling habit… prey is scarcer than outside, [meaning] growth is slower and this may result in bigger size.»

Unfortunately the media spotlight on the giant huntsman has had negative consequences. Jäger reports that its numbers are dwindling due to unregulated demand by the pet trade.

There are also large huntsman spiders in Australia. They usually hide under loose tree bark, but their long legs have also been spotted behind wall clocks and sun-visors in cars.

Since they prey on pests such as flies, they should be considered welcome guests. But their crab-like appearance, leg span of up to 6 inches (16cm) and ability to deliver a nasty nip when provoked can be alarming.

The huntsman might have the best pins, but the true heavyweight champions are the tarantulas.

One of Africa’s largest living spiders is the king baboon tarantula. It has a leg span of up to 8 inches (20cm) and is rusty red-brown in colour. In the wild it digs into the soil of grasslands, then constructs webs across its burrows to catch prey.

Hysterocrates hercules has a name which is bigger than the actual spider!

Their size makes them popular pets, but their temperament is less appealing. Their common name refers to the fact that baboons often eat them, and as a result they are highly defensive towards primates, including humans. When approached, a king baboon spider rears up to expose its fangs and hisses loudly by rubbing its legs together.

There is another species of African tarantula revered among collectors. There is a thriving unscrupulous online trade in «super-sized» Hercules baboon spiders, even though they have not been seen in the wild since 1900.

«Hysterocrates hercules has a name which is bigger than the actual spider!» says Richard Gallon from the British Arachnological Society. «Although the only known specimen has the largest carapace of any African spider, there are other species of tarantula in Africa which are heavier and with larger leg-spans.»

The first part of the Goliath birdeater’s name is no exaggeration

That single specimen resides in a jar of preserving alcohol in the Natural History Museum in London, UK.

There are unlikely to be more anytime soon. «Hysterocrates hercules was collected from central Nigeria, an area which is now politically unstable, so not a place for researchers to risk their lives visiting,» says Gallon. «Grassland tarantulas are also difficult to find, often needing several hours of searching by an experienced team to locate specimens.»

In 2011, staff at the Natural History Museum brought in a Guinness World Records expert to witness a showdown. They measured the volume of their Hercules baboon spider against a similarly-preserved Goliath bird-eating spider. This settled the matter: H. hercules was less than a third of the size of Goliath.

The first part of the Goliath birdeater’s name is no exaggeration. Its legs span 11 inches (28cm), just shy of the giant huntsman, but it is a much bulkier animal.

Size is much debated, particularly among the tarantula breeding community. But one of the heaviest captive-bred specimens was identified by Guinness experts as Rosi. She weighed in at 6 oz (175g) and had a body length of almost 4.7 inches (12cm).

In the wild, Goliath birdeaters are rarely encountered. They live in the upland rainforests of South America and are nocturnal. To maintain their impressive physiques, they are voracious predators – of earthworms.

The B-movie moniker comes from early explorers, who reported having witnessed one eating a hummingbird. The naturalist Maria Sibylla Merian created a dramatic illustration of this incident, which promptly did the Victorian equivalent of going viral.

In truth, being a ground-based predator the Goliath birdeater’s diet is unlikely to include many birds. But the opportunistic spiders have been recorded snacking on frogs, toads, lizards and small mice.

In the wild, Goliath birdeaters are rarely encountered

This diet obviously helps to boost their size, but it also makes them a bigger target for predatory mammals and birds. Fortunately, they have powerful defences.

«The large South American species possess particularly irritating hair on the abdomen, which they rake off into the air with the spines on their rear legs,» says Gallon. «These tiny irritant hairs waft in the air and settle on the mucus membranes – eyes, nose – of would-be attackers and discourage them.»

For true giants, it is not enough to be big: they have to be hairy too.

www.bbc.co.uk

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