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Latest Arachnids Stories

orb weaver spider genetics
2014-07-21 03:30:56

Harvard University Largest-ever study of spider genetics shows orb weaver spiders do not share common origins For decades, the story of spider evolution went like this: As insects became more and more diverse, with some species taking to the skies, spiders evolved new hunting strategies, including the ability to weave orb-shaped webs to trap their prey. From that single origin, the story goes, orb-weaver spiders diverged along different evolutionary paths, leading to today, where...

Scientists Discover That Scorpions Are Master Architects
2014-07-03 03:23:46

Society for Experimental Biology Israeli scientists have discovered that scorpion burrows have a platform on which to warm up before the evening hunt. The researchers, represented by Dr Amanda Adams (Ben-Gurion University of the Negev, Israel), investigated the burrows of wild Large-Clawed Scorpions (Scorpio maurus palmatus) in the Negev Desert of Israel. After trapping the scorpions, they prepared replica casts of their burrows by filling them with molten aluminium. Once the casts had...

New Evidence Pegs Semi-Aquatic Spiders As Fish-Eating Predators
2014-06-19 09:02:09

Gerard LeBlond for redorbit.com - Your Universe Online A new study, published in the academic journal PLOS ONE, from zoologists in Switzerland and Australia, state that spiders all over the world not only prey on insects, but also feed on fish. Ecologists view spiders as an insect predator, but research has revealed that certain larger species of spiders will occasionally catch and consume small fish. Martin Nyffeler from the University of Basel, Switzerland and Bradley Pusey from...

Lover Or Fighter? Spider's Job Type Depends On Personality
2014-06-18 08:51:50

Brett Smith for redOrbit.com - Your Universe Online We all know that our personality type can affect how well we perform our job, but does the same principle apply to other species? According to a new study in Proceedings of the National Academy of Sciences, it does apply to spiders – as a team of researchers has found aggressive spiders are better at killing prey and defending the colony, while docile spiders excel at caring for the baby spiders. The study focused on Anelosimus...

Specialized Leg Organs Help Spiders Glean Information From Their Silk
2014-06-03 11:11:12

Brett Smith for redOrbit.com - Your Universe Online A spider’s web is more than just a home or trap for unsuspecting prey, it’s also a communications network capable of telling a spider information about prey, mates, and its own structural integrity. According to a new report in the journal Advanced Materials, spider silk can be tuned to a wide range of harmonics and these various frequencies provide a wealth of information to spiders, which sense the frequencies using leg organs...

Threatened Male Scorpions Flee, Females Sting
2014-05-29 03:14:52

PLOS Threatened female bark scorpions sting quicker than males, likely to compensate for reduced ability to flee the threat, according to results published May 28, 2014, in the open access journal PLOS ONE by Bradley Carlson from Pennsylvania State University and colleagues. Differences between male and female scorpion bodies and behavior may result from sexual or environmental pressures. For example, female bark scorpions are pregnant 80% of the year, and as a result, may deal with...

Common house spider - Achaearanea tepidariorum
2014-05-17 05:52:18

April Flowers for redOrbit.com - Your Universe Online Whether you think they are creepy and scary, or useful and beautiful, one has to admit that spiders are also fascinating. And it isn't just Hollywood that finds spiders irresistible - research scientists find them equally alluring. A group of researchers from the University of Akron (UA), for example, have just released a new study demonstrating a more efficient and stronger commercial and biomedical adhesive inspired by spider silk....

Spider Genome Sequenced For The First Time
2014-05-08 03:19:02

Anne-Mette Siem, Aarhus University For the first time ever, a group of Danish and Chinese researchers has sequenced the genome of the spider. This knowledge provides a much more qualified basis for studying features of the spider. It also shows that humans share certain genomic similarities with spiders. The fact that the eight-legged creepy spider in some ways resembles humans is one of the surprising conclusions after researchers at Aarhus University and the Beijing Genomics...

Cartwheels In The Sand: Amazing Movements Of The Flic-Flac Spider
2014-05-06 07:56:59

Lawrence LeBlond for redOrbit.com - Your Universe Online In the human world, cartwheeling is a fun activity for many children and is a popular routine for Olympic gymnasts. It’s unlikely, however, that you would see a person using the cartwheel technique to escape danger. But in the natural world, one species of animal has been found to use cartwheels as an escape mechanism in its desert environment. The animal is a new species of spider called Cebrennus rechenbergi, or the flic-flac...

Scientists Find Four Eyes In 305M-Year-Old Daddy Longlegs Fossil
2014-04-10 13:42:21

[ Watch the Video: Ancient Harvestman Arachnid Images Reveal Secrets ] Lawrence LeBlond for redOrbit.com - Your Universe Online A group of arachnids known as harvestmen -- or more commonly daddy longlegs -- are known from every continent on the planet except for Antarctica. These spindly-legged creatures have been creeping and crawling around for hundreds of millions of years. While living harvestmen have a single pair of eyes, a newly-described harvestmen fossil from France shows...


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
Cthulhu
  • A gigantic fictional humanoid alien god being described with a head resembling an octopus and dragon wings and claws, around whom an insane cult developed.
  • Pertaining to the mythos of Cthulhu and additional otherworldly beings created by H. P. Lovecraft or inspired by his writings and imitators.
This word was invented in 1926 by H.P. Lovecraft for his short story, 'The Call of Cthulhu.' 'Cthulhu' may be based on the word 'chthonic,' which in Greek mythology refers to the underworld.
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