Top 10 most biggest Spider in the World

1/Banana Spider

The banana spider is a common name used for two entirely different species of spiders, the nephila clavipes of North America, and the phoneutria of Central and South America, the latter of which can be deadly.The phoneutria or South American banana spider is a large, aggressive spider with a body length of about 1.3 inches (3 cm). This banana spider primarily makes its home in the rain forests but can also be found in cities, where, between 1970 and 1980 it was reportedly responsible for the hospitalization of some 7,000 people in southeastern Brazil.Banana spiders go through many molting stages, but the most notable is the last stage. Approximately 4 days before a female reaches her final molt, she ceases eating and doing any web repair. Around this time, a mature dominant male will move into her web and spend a few days getting to know her. He is waiting for her to finish molting, because the female is only sexually receptive for 48 hours after this last stage has occurred.The strong web of banana spiders is complex. It is a fine-meshed orb suspended in a maze of non-sticky “barrier webs.” They make big webs, about 3 feet wide, spun in a place best suited to take advantage of the flight paths of other insects. Some scientists suggest that the silk’s color serves a dual purpose: sunlit webs ensnare bees that are attracted to the bright yellow strands and in shady spots, the yellow blends in with background foliage, acting as camouflage.

2/Sydney funnel-web

The Sydney funnel-web spider, Atrax robustus, is an Australian funnel-web spider usually found within a 100 km (62 mi) radius of Sydney, New South Wales, Australia.The Sydney funnel-web spider  is unquestionably the most dangerous spider in Australia; the red back and the paralysis tick are the only other two arachnids with potentially fatal bites.The Sydney Funnel-web Spider (Atrax robustus) occurs in New South Wales, from Newcastle to Nowra and west to Lithgow. They especially favour the forested upland areas surrounding the lower, more open country of the central Cumberland Basin.It is a large (6-7 cm), black, aggressive, ugly looking spider with massive fangs. These are large and powerful enough to easily penetrate a fingernail. When disturbed it tends to rear up on its hind legs, a defensive posture that exposes the fangs. The venom of the slightly smaller male spider is five times as toxic as the female. This is unfortunate, as male funnel webs tend to roam about, particularly after heavy rain in summer, and often wind up indoors. The primary toxic component is atraxotoxin, which alone can cause all the symptoms. The venom also contains hyaluronidase and other components (GABA, spermine, indole acetic acid). For some strange reason, human beings (and other primates and monkeys) are particularly sensitive to the venom, whereas toads, cats and rabbits are almost unaffected.

3/Wolf Spiders

Wolf spiders are members of the family Lycosidae. They are robust and agile hunters with good eyesight. They live mostly solitary lives and hunt alone. Some are opportunistic hunters pouncing upon prey as they find it or even chasing it over short distances. Some will wait for passing prey in or near the mouth of a burrow.The eye arrangement of the wolf spider is one of its most interesting features; they have four small eyes in the bottom row, followed by two large eyes in the middle row, and two medium eyes in the top row. They received the name wolf spider due to an early belief that the spiders would actually hunt their prey in a group. Some other names for the wolf spider are the ground spider and the hunting spider. Wolf spiders do not actually make webs; instead they hunt for its meal. They are most commonly found throughout Australia. They make homes by digging holes or living under rocks. The wolf spider will often cover the burrow with leaves or grass.Most wolf spiders live for several years.  In many species, female wolf spiders lay dozens of eggs at one time and wrap them in a large ball of web.  The female will then carry  the egg sac with them until the spiderlings hatch.  The gestation period is 9 to 27 days depending on the surrounding temperature and species of wolf spider. Upon hatching the, spiderlings will live on the mother’s back for a few weeks until they are large enough to hunt on their own. Wolf spiders are active hunters that patrol the ground for insects, other spiders, and similar creatures.  They do not use webs to capture prey.  They live by the thousands in leaf litter and grassy areas.  Some wolf spiders build small burrows and defend a territory, others are free-roaming.

4/Latrodectus 

Latrodectus is a genus of spider, in the family Theridiidae, that contains 31 recognized species. The common name widow spiders is sometimes applied to members of the genus due to the behavior of the female of eating the male after mating, although sometimes the males of some species are not eaten after mating, and can go on to fertilize other females.The black widow spiders are perhaps the best-known members of the genus.This spider’s bite is much feared because its venom is reported to be 15 times stronger than a rattlesnake’s. In humans, bites produce muscle aches, nausea, and a paralysis of the diaphragm that can make breathing difficult; however, contrary to popular belief, most people who are bitten suffer no serious damage—let alone death. But bites can be fatal—usually to small children, the elderly, or the infirm. Fortunately, fatalities are fairly rare; the spiders are nonaggressive and bite only in self-defense, such as when someone accidentally sits on them.These spiders spin large webs in whichfemales suspend a cocoon with hundreds of eggs. Spiderlings disperse soon after they leave their eggs, but the web remains. Black widow spiders also use their webs to ensnare their prey, which consists of flies,mosquitoes, grasshoppers, beetles, and caterpillars. Black widows are comb-footed spiders, which means they have bristles on their hind legs that they use to cover their prey with silk once it has been trapped.

5/Violin Spider

Violin spider(brown recluse spider), is a well-known member of the family Sicariidae.t is often found in warm, dry climates and prefers to stay in undisturbed areas such as basements, closets, and attics. It is not an aggressive spider, but will attack if trapped or held against the skin. One death — in December, 2001 — has been reported in the United States from a brown recluse bite.A black widow spider is a small, shiny, black, button-shaped spider with a red hourglass mark on its abdomen, and prefers warm climates. Black widow spider bites release a toxin that can cause damage to the nervous system, thus emergency medical treatment is necessary.Recluse spiders build irregular webs that frequently include a shelter consisting of disorderly threads. The wild variety lives in the southern states ranging from central Texas to westernGeorgia, and the domestic variety lives in the lower reaches of the Midwest. They frequently build their webs in woodpiles and sheds, closets, garages, plenum, cellars and other places that are dry and generally undisturbed. When dwelling in human residences they seem to favor cardboard, possibly because it mimics the rotting tree bark which they inhabit naturally. They have also been encountered in shoes, inside dressers, in bed sheets of infrequently used beds, in clothes stacked or piled or left lying on the floor, inside work gloves, behind baseboards and pictures, and near sources of warmth when ambient temperatures are lower than usual.

6/yellow sac spider

The yellow sack spider with the Latin name Cheiracanthium inclusum is very common in most of the United States. The yellow sack spider is a cause of many bites in the US and a lot of house spiders are crushed on suspicion of being yellow sac spiders. Its bite corresponds to a bite from a wasp.Sac spiderstypically have darker mouthparts and a faint dark stripe running lengthwise down the abdomen.Normally, these are outdoor spiders, but sac spiders often invade structures. Their numbers increase significantly in the fall when the weather turns cool and their food supply disappears. If there are small insects available, sac spiders can become established indoors.Sac spiders construct a silken tube or sac in a protected area, such as within a leaf, under landscape timbers or logs, or at the junction of a wall and ceiling, and they use this sac as their daytime retreat. This is how the sac spider gets its name. Thesespiders do not build webs.

7/Tarantula(Acanthoscurria atrox)

Tarantulas are among the largest spiders in the world and likely the most feared. Emergency physicians are increasingly likely to encounter patients who have had tarantula contact as the popularity of tarantulas as pets is increasing.There are hundreds of tarantula species found in most of the world’s tropical, subtropical, and arid regions. They vary in color and behavior according to their specific environments. Generally, however, tarantulas are burrowers that live in the ground.Tarantulas are slow and deliberate movers, but accomplished nocturnal predators. Insects are their main prey, but they also target bigger game, including frogs, toads, and mice. The South American bird-eating spider, as it name suggests, is even able to prey upon small birds.A tarantula doesn’t use a web to ensnare prey, though it may spin a trip wire to signal an alert when something approaches its burrow. These spiders grab with their appendages, inject paralyzing venom, and dispatch their unfortunate victims with their fangs. They also secrete digestive enzymes to liquefy their victims’ bodies so that they can suck them up through their straw-like mouth openings. After a large meal, the tarantula may not need to eat for a month.

8/Tarantula(Eurypelma rubropilosum)

This is another species of the Tarantula which is also poisonous. This too is found in the NeotropicsRead.

9/Lasiodora klugi

The Lasiodora klugi (also known as the Bahia scarlet) is a tarantula endemic to Brazil. The species grows from 8 to 10 inches in size and looks similar to Lasiodora Parahybana. The Klugi however has darker red hairs on its abdomen and has a heavier and thicker build than the Parahybana.

10/Pamphobeteus sp

This one is a tarantula but is of the other species. This one too is found in the Neotropics

Endelea Kufuatilia