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Latest Arachnids Stories

The Amazing Properties Of Spider Silk
2012-03-06 05:49:20

New research has revealed that spider silk carries amazing physical properties, according to a new paper published in the journal Advanced Materials. Xinwei Wang, who wanted to take a closer look at spider webs, ordered eight Nephila clavipes, commonly known as golden silk orbweavers. He put them to work eating crickets and spinning webs so their materials and habits could be studied. Wang, who is an associate profess of mechanical engineering at Iowa State University studies thermal...

Why Don't Spiders Stick To Their Own Webs?
2012-03-02 04:00:37

[ Video 1 ] | [ Video 2 ] Researchers at the Smithsonian Tropical Research Institute and University of Costa Rica asked why spiders do not stick to their own sticky webs. Repeating old, widely quoted but poorly documented studies with modern equipment and techniques, they discovered that spiders' legs are protected by a covering of branching hairs and by a non-stick chemical coating. Their results are published online in the journal, Naturwissenschaften. They also observed that spiders...

The Bigger The Phobia, The Larger The Spider
2012-02-24 05:55:32

According to new research, the bigger the person's arachnophobia, the more likely they perceive the spider is bigger than it really is. During the study, participants who feared spiders were asked to undergo five encounters with live spiders, and provide size estimates of the spiders after those encounters. They found that the more afraid they said they were of spiders, the larger they estimated the spiders to be. "If one is afraid of spiders, and by virtue of being afraid of spiders...

2012-02-23 11:35:09

The more afraid a person is of a spider, the bigger that individual perceives the spider to be, new research suggests. In the context of a fear of spiders, this warped perception doesn't necessarily interfere with daily living. But for individuals who are afraid of needles, for example, the conviction that needles are larger than they really are could lead people who fear injections to avoid getting the health care they need. A better understanding of how a phobia affects the perception...

Scientists Search For Spider Web's  Strength
2012-02-02 09:38:05

Scientists report that they have solved the riddle of how spider webs can withstand different levels of stress - including hurricane force winds - without collapsing. Researchers, led by Markus Buehler of the Massachusetts Institute of Technology (MIT), used computer simulations to find out how silk structures respond to different levels of stress. What they found was quite remarkable. Reporting in the journal Nature, the researchers found that web durability does not only rely on silk...

2011-12-12 22:07:09

Smithsonian researchers report that the brains of tiny spiders are so large that they fill their body cavities and overflow into their legs. As part of ongoing research to understand how miniaturization affects brain size and behavior, researchers measured the central nervous systems of nine species of spiders, from rainforest giants to spiders smaller than the head of a pin. As the spiders get smaller, their brains get proportionally bigger, filling up more and more of their body cavities....

2011-11-23 11:47:31

Researchers have shown for the first time how Golden orb web spiders (Nephila antipodiana) add a chemical to their web silk to repel invading ants. The finding adds a chemical defense to the impressive properties of spider silk, already known to be very strong, elastic and adhesive, and may provide new opportunities for pesticide design. The study was led by researchers from the National University of Singapore (NUS) and the University of Melbourne, and is published in the journal...

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2011-08-18 10:08:50

"The strength of spider dragline silk exceeds that of any material produced in laboratories, by far. All attempts to manufacture threads of similar strength have failed thus far," explains Professor Horst Kessler, Carl von Linde Professor at the Institute for Advanced Study at the TU Muenchen (TUM-IAS). In collaboration with the workgroup of Prof. Thomas Scheibel, who was a researcher at the TU Muenchen until 2007 and who now holds a chair of the Institute of Biomaterials at the Universitaet...

2011-07-06 06:19:04

(Ivanhoe Newswire) -- Young house spiders weave webs with perfect angles and regular patterns, but as they reach old age their webs deteriorate, showing gaping holes and erratic weaving. By using spiders as a simple model this research may provide insight into how age affects behavior in other organisms, including humans. The reason web building skills are lost as spiders grow older may be due to degeneration of the central nervous system. PhD researcher, Mylne Anotaux, from Nancy University...

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2011-07-05 08:16:05

Young house spiders weave webs with perfect angles and regular patterns, but as they reach old age their webs deteriorate, showing gaping holes and erratic weaving. By using spiders as a simple model this research may provide insight into how age affects behavior in other organisms, including humans. The reason web building skills are lost as spiders grow older may be due to degeneration of the central nervous system. PhD researcher, Mylne Anotaux, from Nancy University in France, says "Our...


Latest Arachnids Reference Libraries

Funnel Weavers, Agelenidae
2014-06-19 13:16:37

Agelenidae is a family that holds about 1,200 recognized species of funnel weaver spiders that occur throughout the world. These spiders build funnel shaped webs that trap prey in their complicated patterns, but they should not be confused with other families of spiders that build funnel webs like funnel-web spiders or funnel-web tarantulas. Funnel weavers can reach an average body length between .1 inches in the smallest species and .7 inches, although the largest species can reach total...

Cellar Spider, Pholcus phalangioides
2014-04-07 13:05:31

The Cellar Spider (Pholcus phalangioides), known also as the Skull Spider because of its cephalothorax resembling a human skull, is a spider belonging to the family Pholcidae. The females have a body length of about 9 millimeters; the males are slightly smaller. The legs are about 5 to 6 times the length of the body. Its habit of living on the ceilings of room, garages, caves, or cellars gives rise to one of its common names. They are thought to be beneficial in some parts of the world...

Tailed Daddy Longlegs Spider, Crossopriza lyoni
2014-04-07 12:30:20

Crossopriza lyoni is a widespread species of cellar spiders that prefer to live in or around human structures. They are commonly known as Tailed Cellar Spiders, Tailed Daddy Longlegs Spiders, and occasionally Box Spiders. They all possess exceptionally long and fragile legs that can reach up to 2.4 inches long and a body length of that ranges from .098 to .28 inches. Their abdomens are distinctly square shaped when they are viewed from the side and their carapace is more or less circular...

Kauai Cave Wolf Spider
2014-04-01 13:14:31

Scientific name: Adelocosa anops Common Names: Kauai Cave Wolf Spider, Big-Eyed Wolf Spider Status: Listed as endangered on the IUCN Red List in 1996 Geography: United States, Hawaii Conservation Information: This particular species is only known to occur in a few caves in a lava flow within an area consisting of 4.1 square miles in the Koloa-Poipu region of Kauai, Hawaii. Only six populations are known to exist as of April 1, 2014. Phylum: Arthropoda Class: Arachnida...

Spruce Fir Moss Spider, Microhexura montivaga
2013-08-26 12:08:18

The Spruce Fir Moss Spider (Microhexura montivaga) is an endangered species of spider that can be found at high elevations in the southern Appalachian Mountains. Initially identified in 1923, they inhabit moss that grows on rocks under the forest canopy. It is one of the smallest mygalomorph spiders, with the adults only measuring 3 to 4 millimeters. The coloration varies from light brown to yellow-brown to a darker reddish brown color, with no markings on its abdomen. Their chelicerae...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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