Spiders. Medical search. Frequent questions (2)

Cobweb spiders build sticky webs and catch annoying flying insects. (ehow.com)
The insects the spiders prey on tend to do very well in small fragments of bushland like urban parks, and even better when there is lighting at night. (newscientist.com)
According to the team's earlier genetic research, the tiny spiders most likely share an "ancient genetic tool kit" with insects: their bodies first construct the photoreceptors, then top them off with lenses. (scientificamerican.com)
Are Spiders And Scorpions Insects? (worldatlas.com)
Spiders are not insects. (worldatlas.com)
Spiders and scorpions are not insects but instead belong to a class of animals known as arachnids . (worldatlas.com)
However, like insects, spiders and scorpions belong to the arthropod phylum. (worldatlas.com)
Spider webs look like the perfect trap for ensnaring insects, but a spider 'tree of life' based on hundreds of genes suggests many spiders jettisoned the web in favour of other ways of capturing prey. (nature.com)
Alright, it catches flying insects, but it advertises to a predator that there's a spider there," he says. (nature.com)
House spiders mainly prey upon small insects such as fruit flies. (darlington.gov.uk)
Exterior lights attract insects, which, in turn attract spiders to prey. (darlington.gov.uk)
Mites are small arthropods that are more closely related to spiders and ticks than to insects. (usu.edu)
Spiders are an essential part of the ecosystem in most parts of the world, eating insects that might otherwise be obnoxious or even dangerous to humans, such as mosquitos. (yahoo.com)

Eliminate damp spaces within your home that may attract spiders' prey. (ehow.com)
The spiders have more to prey on and can put more energy into growing bigger. (newscientist.com)
Spiders are small but fierce hunters with all the tools and skills they need to capture and kill their prey. (gale.com)
They don't divide up the carcass to eat separately, for like all spiders, they digest their prey outside their bodies. (nationalgeographic.com)
If they lack for prey, the spiders will turn on each other but they are much more likely to cannibalise unrelated individuals than relatives. (nationalgeographic.com)
They also have pedipalps, which are appendages located near the fangs that help the spider hold the prey when biting. (worldatlas.com)
This female orb-weaving araneoid spider ( Eriophora ) from the Amazonian rainforest waits at the centre of its web for prey to arrive. (nature.com)
The new studies overturn decades-old dogma, by showing that spiders that weave orb-shaped webs are not all close kin, with some species more related to species that catch prey differently. (nature.com)
Despite their web-weaving behaviour, deinopoids are more closely related to families that include wolf spiders and crab spiders - which tend to sneak up on their prey - than to araneoids, the researchers report. (nature.com)
On the basis of their findings, Bond and his team suggest that the orb-shaped spider web emerged in the Lower Jurassic (between 187 million and 201 million years ago), and that ancestors of many spiders abandoned web-weaving in favour of other strategies for capturing prey. (nature.com)
A symmetric orb is pretty, but it may only be the ideal architecture in a subset of environments and for a subset of prey the spiders are after. (nature.com)
Jumping spiders are a wandering spider species that do not make webs to entrap their prey but instead use speed and agility to capture their victims. (notcot.com)
The house spider hangs upside down in its web, which is made up of trip lines that extend vertically and horizontally throughout the web to entrap prey. (darlington.gov.uk)
There are some ingenious ways spiders use to capture prey. (si.edu)
For instance, the ogre-faced spider weaves a net between its front legs and then dangles above places where prey are likely to pass through. (si.edu)

Based on the comic book of the same name, Ultimate Spider-Man lets you play as either the hero Spider-Man or his arch-nemesis, Venom. (gamespot.com)
Use the unique combat techniques of either Spider-Man or Venom to battle a host of Spider-Man characters. (gamespot.com)
The venom of spiders and scorpions are of interest to scientists for various reasons. (worldatlas.com)
For example, no insect is known to have developed immunity to the venom of the Australian funnel-web spider, which is highly toxic, yet the same venom is harmless to vertebrates. (worldatlas.com)
As a result, scientists are investigating the possibility of developing a pesticide from its venom, as funnel-web spiders thrive in captivity and are easy to milk. (worldatlas.com)
The spider won't seek out people to sting, but should a hand stray into her web by accident, a trip to the emergency room may be in order as the venom acts directly on the nerves. (snopes.com)
When it's time to eat, the spider bites down on its intended victim, injecting its neurotoxic venom. (snopes.com)
In an absolute shocker (not the villain), Insomniac revealed that not only is a new Spider-Man game on the way, but it will have Venom as the villain. (shacknews.com)
May 2, 2019 Spider venom does not only consist of neurotoxins but also of a multitude of dangerous constituents. (sciencedaily.com)
Insomniac developers have answered questions about a potential Venom spinoff in the wake of Spider-Man 2's launch. (videogamer.com)
Stunning cosplay transforms Marvel's Spider-Man 2 ace photographer, Mary Jane, into Lady Venom. (videogamer.com)
The poster, by Rafael Albuquerque, features Spider-Man and Spider-Gwen going up against two of the biggest Spider-foes, Venom and Carnage, on the Brooklyn Bridge. (comicsalliance.com)
You won't see the Green Goblin make an appearance (though a Sinister Six set would be intriguing), but you will find Venom and Carnage, both of whom spun out of Spider-Man's own symbiote connection. (comicsalliance.com)
Nine months later, Peter and Miles join forces in Marvel's Spider-Man 2 to face the ultimate test of strength inside and outside the mask as they balance their lives, friendships, and their duty to protect those in need as the monstrous Venom threatens to destroy everything. (playstation.com)
Serious injuries from spider bites can include severe wounds caused by the tissue-destroying venom of brown spiders and bodywide poisoning caused by the nerve-toxic venom of widow spiders. (msdmanuals.com)
The deep-rooted origin of disulfide-rich spider venom toxins. (bvsalud.org)
As the lineages under evaluation constitute nearly 60% of extant spiders , our findings provide fascinating insights into the early evolution and diversification of the spider venom arsenal. (bvsalud.org)
By comparatively evaluating the molecular evolutionary histories of araneomorph and mygalomorph spider venom toxins, we highlight their contrasting evolutionary diversification rates. (bvsalud.org)
The majority of spiders rely on their venom to defend themselves, to hunt, or both. (bvsalud.org)
in contrast, spiders rely on a single class of proteins , known as disulfide -rich peptides , to create their deadly venom cocktail. (bvsalud.org)

Schindler's illustrations are a marvel of clarity and composition, varying perspective and picturing several different kinds of spiders in action. (kirkusreviews.com)
Macro photography allows us to see the faces of different kinds of spiders. (toxel.com)
Only a few kinds of spiders are dangerous, but many people are afraid of all spiders, and want to keep them away. (ehow.com)

There are around 400 species of spiders known to occur in Indiana. (in.gov)
Most species of spiders have eight eyes, although some have fewer. (worldatlas.com)
More than 30,000 species of spiders have been identified, some of which are poisonous. (worldatlas.com)
There are over 100 species of spiders that mimic ants by having evolved similar appearances and even similar pheromones. (si.edu)

While both the brown recluse and black widow spiders are known as venomous, neither is aggressive. (in.gov)
Black widow spiders live in undisturbed locations and are rarely found in homes. (in.gov)
Where Do Black Widow Spiders Live? (worldatlas.com)
The best remedy for controlling brown widow spiders is to remove areas where they may nest, according to Ring. (sciencedaily.com)
Ring added that brown widow spiders also can be controlled by using spray or powdered insecticides labeled for spiders. (sciencedaily.com)
Mar. 13, 2023 Black widow spiders have earned a fearsome reputation for their venomous bite. (sciencedaily.com)
May 27, 2021 Scientists have published a new study showing that Noble False Widow spiders can deliver a bite that requires hospitalization. (sciencedaily.com)
During the autumn, false widow spiders replace the bee-fly as the most popular request by the public for identification from the IAS. (nhm.ac.uk)
False widow spiders , of which seven species have been recorded in the UK, are among only a dozen or so of the UK's 650 species of spider that are capable of biting humans. (nhm.ac.uk)
Even in homes with several resident false widow spiders you are statistically far more likely to be stung by a wasp or bitten by a dog,' said Stuart Hine, Manager of the IAS. (nhm.ac.uk)
Widow spiders belong to the genus Latrodectus and are found throughout the world. (medscape.com)
The button spider ( Latrodectus indistinctus ) is one of several widow spiders native to South Africa. (medscape.com)
Other widow spiders are generally black but may have red spots, such as Latrodectus tredecimguttatus, or a dorsal red stripe, such as the redback spider. (medscape.com)
Widow spiders are present throughout the United States. (msdmanuals.com)
Widow spiders are recognized by a red or orange hourglass-shaped marking on the abdomen. (msdmanuals.com)
The best known exceptions are widow spiders (Latrodectus spp. (cdc.gov)

The redback spider ( Latrodectus hasseltii , also known as the red-striped spider, red-spot spider, and jockey spider) is a species of venomous spider indigenous to Australia, that typically lives in warm, sheltered locations, often in or around human dwellings. (snopes.com)
Female Black Widow Spider, Latrodectus mactans. (si.edu)
In the United States, arguably the most famous is the Southern black widow spider ( Latrodectus mactans mactans ). (medscape.com)
The term widow spider is preferred because not all species in the genus Latrodectus are black. (medscape.com)
The redback spider (Latrodectus hasselti ) is endemic to Australia. (medscape.com)
The white widow spider ( Latrodectus pallidus ) can be found in North Africa, Central Asia, and the Middle East. (medscape.com)
Female black widow spider, Latrodectus mactans, in the process of spinning her web on a tree branch. (medscape.com)
A redback spider (Latrodectus hasseltii) female, found in suburban Sydney, New South Wales, Australia. (medscape.com)

Regular cleaning will remove many spiders, webs and egg sacs, but if you vacuum, you should remove the vacuum cleaner bag immediately and dispose of it outside, notes the Ohio State University Extension. (ehow.com)
Spider webs and egg sacs can be easily removed with a vacuum. (darlington.gov.uk)

Seven new species of funnel-web spiders previously unknown to science were discovered in caves in Israel. (ynetnews.com)

According to the Ohio State University Extension, most spiders are harmless to humans. (ehow.com)
His wife Jeanne insists that his death was the result of a spider bite he got last year - and her description matches that of the deadly redback, which is one of the few spiders that can be seriously harmful to humans. (snopes.com)
Just like the orb weavers, the jumping spiders are harmless to humans. (notcot.com)
These spiders are shy and are less likely than black widows to bite humans," Ring said. (sciencedaily.com)
And if you do come across a Joro unexpectedly, you're unlikely to get much more than a quick fright: Scientists say the naturally timid spiders aren't looking to bite humans. (yahoo.com)
Certain species of salticids (jumping spiders) can see into spectrums we humans cannot. (si.edu)

A very poisonous spider with a distinctive red hourglass marking. (enchantedlearning.com)
Generally found in tropical areas, the brown widow spider is closely related to the black widow spider and is poisonous, according to LSU AgCenter entomologist Dr. Dennis Ring. (sciencedaily.com)

Brown recluse spiders are sometimes called "fiddle-back spiders" because of the violin-shaped marking on their back. (in.gov)
Brown spiders have a violin-shaped marking on their back. (msdmanuals.com)

In fact, house spiders are often referred to as cobweb spiders because of the abandoned webs they leave behind. (darlington.gov.uk)

Do house spiders do any harm? (darlington.gov.uk)
No. House spiders are harmless and are more of a nuisance than a health risk. (darlington.gov.uk)
Because house spiders usually construct their webs in open areas of buildings, the easiest way to manage infestations is by non-chemical methods. (darlington.gov.uk)
Home / chelicerata / 12 Common House Spiders: Just Who's Hanging Out In Your Bath? (earthlife.net)
But before we take a deeper look at the most common house spiders, we'll first take a very brief look at the spider anatomy . (earthlife.net)
House Spiders can be tricky to catch, so before starting make sure that you have some small tubes to catch them in and a glass jar in which to observe them. (earthlife.net)
Telling male and female house spiders apart is easily done by looking at their palps. (earthlife.net)

Six deadly spiders, including the black widow and the Chilean recluse, are profiled. (gale.com)
including the black widow L. mactans) and brown spiders (Loxesceles spp. (cdc.gov)

Deinopoid spiders, such as this ogre-faced spider, spin orb webs made from a dry silk. (nature.com)

Cellar spiders tend to hide in corners. (ehow.com)
Jumping spiders tend to be very curious and can exhibit surprising signs of intelligence. (notcot.com)
They also tend to be built higher off the ground than some other spiders' webs. (yahoo.com)

Spiders feed upon insect pests that can cause a range of problems in your household, including flies, mites, clothes moths and silverfish. (ehow.com)
Spray the undersides of plant leaves daily with a garden hose to remove spider mites. (ehow.com)
Zetzellia mali is a secondary predator, mostly of European red mite and rust mites, but will also feed on spider mite eggs. (usu.edu)
Spider mites in this group are web spinners, hence the name "spider" mites. (usu.edu)
Use of miticides will eliminate the beneficial predatory mites, which are capable of keeping spider mite populations below economically damaging levels. (usu.edu)
Another reason to avoid chemical control is that populations of twospotted and McDaniel spider mites have developed resistance to miticides. (usu.edu)
Several other species of predatory phytoseiid mites do occur, but their role in biological control of spider mites is usually minimal. (usu.edu)
Glasshouse red spider mites on webbing. (rhs.org.uk)
Despite the common name, red spider mites are usually yellowish-green with two dark patches. (rhs.org.uk)

For the next couple of months, the young spiders stay in the next together and hunt as a group. (nationalgeographic.com)

Clinically, the predominant effects are neurological and autonomic, in contrast to the dermonecrotic local effects associated with spiders causing necrotic arachnidism (eg, brown spiders from the genus Loxosceles ). (medscape.com)

Beautiful photos of deadly spiders captured using a macro lens by talented photographer Jimmy Kong . (toxel.com)
Was a man in Ireland killed by the bite of a deadly redback spider? (snopes.com)
I saw an article in a news paper about the deadly redback spider being in the uk. (snopes.com)
It was headlined with "KILLER TOILET SPIDER WARNING: Dad dies from deadly redback bite" alot of people on Facebook are freaking out so I just wanted to see if it's true or false. (snopes.com)
A masterful, experienced Super Hero, Spider-Man investigates a mysterious gang and tries to halt a deadly new bioweapon. (playstation.com)
Similar discoveries could be unlocked by better understanding the range of deadly molecules used by spiders , and how these came to be. (bvsalud.org)

And the spiders' extraordinary visual ability captivates many scientists. (scientificamerican.com)
The eyes' biological structure cannot tell scientists everything about how the spiders see. (scientificamerican.com)
Scientists have so far named around 45,000 spider species, grouped into more than 100 families. (nature.com)
Either it emerged much earlier than scientists thought, in a common ancestor of many spider families, and was later abandoned by some species, as most researchers used to believe. (nature.com)
Scientists have now s... ...camera and a microscope to record the spiders in minute detail. (neatorama.com)
Scientists recently discovered a spider in Madagascar that can individually create a *strong class="m. (neatorama.com)
Feb. 21, 2023 Scientists have published the first record of a noble false widow spider feeding on a pygmy shrew, a species of tiny mammal protected in Ireland. (sciencedaily.com)
Arachnophobes may want to take note: Scientists are warning that palm-sized Joro spiders , which are now becoming a common sight in the Southeastern U.S., will likely begin to spread north soon. (yahoo.com)

Centers for Disease Control and Prevention (U.S.) "Is it a spider bite? (cdc.gov)
In 1994, poison-control center log reports compiled by the American Association of Poison Control Centers listed 9418 spider bites ( Table 1 ) (1). (cdc.gov)

This ancestral toxin was present 375 million years ago in the last common ancestor of modern-day spiders . (bvsalud.org)

Though many people are afraid of spiders, they rarely bite people unless threatened. (medlineplus.gov)
Once you know more about spiders, you may be less afraid and even begin to identify with the creatures. (ehow.com)
You Shouldn't Be Afraid of Spiders Much of the fear people feel toward spiders is due to misinformation largely spread through the internet. (medscape.com)

Spiders have eight legs and silk glands in the abdomen. (enchantedlearning.com)
Although the findings support many previous ideas about spider family relations - such as the distinctiveness of trapdoor spiders, which build subterranean traps of dirt, silk and plants- orb weaving araeonoids and deinopoids seem to be more distantly related than previously thought. (nature.com)
The weight of the rock, suspended by a strand of spider silk, provides an adequate third anchor point, at. (neatorama.com)
These are the spinnerets from which the spider produces the silk to make its webs. (earthlife.net)
The silk Amy uses is very different to that of other spiders, in that each thread is composed of many fine strands. (earthlife.net)
Compared to typical cobwebs, Joro spiders create enormous three-dimensional webs that look like they're spun from golden silk. (yahoo.com)
Bolas spiders use a long line of silk ended with a spot of sticky glue (a bolas), swinging it at nearby moths to catch them, much like a fishing line. (si.edu)
For its weight, spider web silk is actually stronger and tougher than steel. (si.edu)

A tarantula is a large, hairy spider. (enchantedlearning.com)
During the 16th and 17th centuries it was believed that a bite from a species of wolf spider (named "tarantula," found in the Taranto region of Italy) would be fatal unless the victim engaged in frenzied dancing to a specific piece of music. (si.edu)

Perched in its tangled web, the redback spider lies in wait. (snopes.com)
Antivenom for redback spider bites has been available since 1956, and no known deaths directly attributable to redback bites have been documented in more than fifty years since then, which makes this latest case in Ireland quite a subject of interest. (snopes.com)
So there's as yet no certainty that John Francis Kennedy was actually bitten by a redback spider, which had not previously been sighted in Ireland, other than someone's year-old recollection of what the spider in question looked like. (snopes.com)

Schneider and Bilde collected female spiders and their egg sacs from the Greek island of Karpethos. (nationalgeographic.com)

Spiders are arachnids that have two body segments, which are the abdomen and cephalothorax. (worldatlas.com)
Like spiders, scorpions are arachnids that have two body segments. (worldatlas.com)
Now, experts are warning that giant spiders could soon begin to fall from the sky in certain areas as they continue to spread across the U.S. Read on to see which places might expect it to start raining arachnids. (yahoo.com)
Even though the invasive of these arachnids may have a striking appearance compared to your average spiders, experts say that Joros don't appear to be harming the environment or damaging agriculture in any way. (yahoo.com)

Like its better-known black widow cousin, the brown widow spider has a yellow-to-orange hourglass marking on the underside of its abdomen. (sciencedaily.com)
The adult female black widow spider is approximately 2 cm in length and shiny black with a red-orange hourglass or spot on the ventral abdomen. (medscape.com)

Everyone I know who works on vision just loves jumping spiders," says Jamie Theobald, who studies insect vision at Florida International University and was not involved in the new study. (scientificamerican.com)

And even if that species of spider did deliver a bite to the victim, it's unproven at this point that his death was directly attributable to that bite. (snopes.com)

The spiders that spin orb-shaped webs belong to two main families -- araneoids, such as garden spiders, and the more obscure deinopoids, which include ogre-faced spiders. (nature.com)

And bites by the venomous black widow and brown recluse spiders can be very dangerous to people. (medlineplus.gov)
A Black Widow Spider Bit Me! (medlineplus.gov)
The house spider is the most common type of comb-footed spider, a group that includes the black widow species. (darlington.gov.uk)
In addition to recognizing the spiders themselves, Ring points out that the egg sac of the brown widow is different from that of the black widow. (sciencedaily.com)
He is yellow with black markings and unlike other spiders his head is nearly as big as his body. (earthlife.net)
Byron Freeman , director of the Georgia Museum of Natural History and part of the team that first identified the spider in the U.S., says they're most noticeable by their distinctive yellow, blue, and black stripes on their backs and legs, although some have solid black legs. (yahoo.com)
By James Gathany (http://phil.cdc.gov/phil/) [Public domain], courtesy of Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Black_widow_spider_9854_lores.jpg). (medscape.com)
CC BY 2.5 (https://creativecommons.org/licenses/by/2.5)], courtesy of Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Black_Widow_Spider_07-04-20.jpg). (medscape.com)

Can a spider really spin a web that size? (neatorama.com)
Joro spiders can be up to three inches long and spin a unique golden web. (yahoo.com)

Fatalities from spider bites are extremely rare. (in.gov)
But spider bites are extremely rare within the UK. (nhm.ac.uk)

Examining more than 200 specimens around Sydney, they found that the more concrete there was, the further they were from bushland and the less leaf litter there was, the bigger the spiders tended to be. (newscientist.com)
Surprisingly, the researchers also found that wealthier areas tended to have larger spiders. (newscientist.com)
They also examined seven of the spiders twice, four months apart, and found that none of them produced new photoreceptors. (scientificamerican.com)
Sometimes known as the 'toilet spider', redbacks can be commonly found living under toilet seats. (snopes.com)
We found a spider with a weird red back. (snopes.com)
According to the findings of the study , published in the Molecular Phylogenetics and Evolution journal, the troglobitic spiders are found exclusively in several caves in Israel. (ynetnews.com)
Ring said the brown widow spider is most often found in areas that haven't been disturbed, such as brush piles, wood piles and areas where hurricane debris has accumulated. (sciencedaily.com)
This spider was found on a farm in the US state of Georgia. (medscape.com)
She rolled up the leg of her pants and found a crushed brown spider, subsequently identified as T. agrestis. (cdc.gov)
Finasteride has been found in spiders (article Richmond et al. (janusinfo.se)

Unlike true social spiders that live permanently in groups, Stegodyphus only forms alliances as youngsters - it's a 'subsocial' spider. (nationalgeographic.com)
Unlike those other waves though, the Spider-Man collection is a mix of heroes and villains in the family, provided they're directly Spider-related. (comicsalliance.com)

Arachnid family tree suggests that many spider species evolved away from web-weaving. (nature.com)
Paul Selden, an arachnid palaeontologist at the University of Kansas in Lawrence, also thinks the web has been abandoned by many spiders. (nature.com)
Twelve months on in Marvel's Spider-Man: Miles Morales , teenager Miles, under Peter's watchful eye, masters his arachnid abilities to become his own version of Spider-Man. (playstation.com)
However, cases of arachnid envenomation from the hobo spider (Tegenaria agrestis) are being reported increasingly in the Pacific Northwest. (cdc.gov)

While you may not think of their presence as a good thing if a spider surprises you when you open your closet door, spiders are actually beneficial. (ehow.com)
In reality, spiders are beneficial to us. (medscape.com)

Adult jumping spiders are littler than a fingernail, but their vision is as clear as a small dog's. (scientificamerican.com)
The researchers counted roughly 7,000 photoreceptor cells per eye in early juvenile, late juvenile and adult spiders. (scientificamerican.com)
Not an orb weaver, but an adult jumping spider. (notcot.com)

Experts say the spiders aren't harming the environment and are unlikely to bite people. (yahoo.com)

And because of these larger meals, fewer spiders in the related groups had died by the 8-week mark. (nationalgeographic.com)
Spider bites cause fewer than three deaths a year in the United States, usually in children. (msdmanuals.com)

Wolf spiders are big, scary-looking and move fast, but they are not aggressive. (ehow.com)

Lowe says this is probably also happening with other spiders in Australia like huntsmen and redbacks , and is almost certainly happening elsewhere in the world. (newscientist.com)

If you are bitten by a spider, you may see a reaction similar to that of a bee sting, including redness, pain and swelling at the site. (medlineplus.gov)

Spiders are usually a harmless nuisance, but they can quickly take over a balcony if given the right circumstances. (ehow.com)

However, these identifying marks can be difficult to discern, and the spider is rarely retrieved intact, so the diagnosis is usually uncertain and based on symptoms. (msdmanuals.com)
A closer look at spider venoms hints at an intriguing evolutionary history which has been rarely examined so far. (bvsalud.org)

They are awesome, spider webs - they're just not the pinnacle of spider evolution that we thought," says Jason Bond, an evolutionary biologist at Auburn University in Alabama, whose team determined the evolutionary relationship of spiders by analysing more than 300 genes in 33 families 1 . (nature.com)
A team led by evolutionary biologist Rosa Fernández of Harvard University in Cambridge, Massachusetts, comes to the same conclusion, using a tree forged from more than 2,000 genes in 12 spider families. (nature.com)
By evaluating DRPs under a comprehensive phylogenetic, structural and evolutionary framework, we have not only identified 78 novel spider toxin superfamilies but also provided the first evidence for their common origin. (bvsalud.org)

Remove litter and debris around your home that may shelter spiders. (ehow.com)

A beautifully illustrated, informative entry in the Let's-Read-and-Find-Out Science series explores the biology of spinning spiders. (kirkusreviews.com)

Many varieties can be quite beautiful with vibrant colours - perform a quick search on peacock jumping spiders for an example. (notcot.com)

While the vast majority of spiders work alone, the odd few live communally and cooperate to hunt and feed. (nationalgeographic.com)
In the two unrelated groups, the spiders that were introduced to one another beforehand didn't cooperate to any greater extent than the fresh strangers. (nationalgeographic.com)
No, but hundreds of spiders can, if they cooperate with each other.Most *strong. (neatorama.com)

A Brown Recluse Spider Bit Me! (medlineplus.gov)
The brown widow spider is becoming more common in the state of Louisiana, according to entomologists. (sciencedaily.com)
The brown widow spider is becoming more common, according to entomologists with the LSU AgCenter. (sciencedaily.com)
Experts say the spider ranges in color from gray or tan to dark brown and may reach 1 inch to 1½ inches long. (sciencedaily.com)
Summer adults have two red eyes, two distinct dark spots on the back behind the eyes (twospotted spider mite) or multiple dark spots on the back (McDaniel spider mite), and are yellow to green, turning brown with age. (usu.edu)
Brown spiders are present in the Midwest and South Central United States, not in the coastal and Canadian border states, except when imported on clothing or luggage. (msdmanuals.com)
Wounds suspected of being caused by the brown spider are often caused by other problems, some potentially more serious. (msdmanuals.com)
Brown spider bites are treated by caring for the wound. (msdmanuals.com)
The bite of a brown spider may cause little or no immediate pain, but some pain develops in the area around the bite within about an hour. (msdmanuals.com)

Spider mite injury to pear can cause rapid and severe leaf burn. (usu.edu)

Organisms5

Diseases1

Chemicals and Drugs6

Psychiatry and Psychology2

Insects13

Prey15

Venom20

Kinds of spiders3

Species of spiders4

Widow spiders16

Latrodectus8

Webs and egg sacs2

Funnel-web spiders1

Humans6

Poisonous2

Violin-shaped marking on th2

Cobweb1

House spiders7

Including the black2

Ogre-faced1

Tend3

Mites9

Young spiders1

Necrotic1

Deadly6

Scientists8

Centers2

Common Ancestor1

Afraid3

Silk8

Tarantula2

Redback spider3

Sacs1

Arachnids4

Abdomen2

Insect1

Deliver a bite1

Belong1

Black8

Spin2

Bites are extremely rare2

Found10

Unlike2

Arachnid4

Beneficial2

Adult3

Bite people1

Fewer2

Wolf1

Redbacks1

Bitten by a spider1

Nuisance1

Rarely2

Evolutionary3

Debris1

Biology1

Search1

Cooperate3

Brown9

Severe1