Archive for the ‘Spiders’ Category

Spider Control Tips from J&J Exterminating

Spider Control Tips from J&J Exterminating

  • Install screens and weather stripping on windows and door sweeps on doors.
  • Fix any cracks in siding and walls, especially where pipes or wires enter the home.
  • Store firewood at least 20 feet away from the house.
  • Wear heavy gloves when moving items that have been stored for a long period of time.
  • Inspect items such as boxes of decorations and grocery bags before bringing them indoors.
  • Store clothing inside plastic containers and check shoes before putting them on, as spiders often hide in these items.
  • If you suspect that a spider has bitten you, contact your primary care physician for medical advice.
  • If you have a spider infestation in your home, contact a licensed pest professional.

Researchers Find Eerie Fossils Of Spiders With Glowing Eyes

Fossils are a source of fascination for many people, and many experts consider spider fossils to be among the most interesting and revealing of all fossil types. Not much is known about the evolution of spiders, which is why nearly every fossilized spider specimen surprises researchers. For example, last year, researchers unearthed a fossil that contained a 100 million year old spider with a tail. This discovery was completely unexpected, as researchers had no idea that a tailed spider ever existed. Now, researchers have discovered ten more spider fossils that contain interesting spider specimens that were previously unknown to researchers. Two of these spiders represent new species, and they possess another trait that has never been seen before in an ancient spider–night vision.

The eyeballs of some animals contain a membrane known as the tapetum which sits directly behind the retina. The tapetum causes an animal’s eyes to appear as if they are glowing when a light is flashed over their eyes in the dark. Most people have probably seen this “glowing” in the eyes of cats. The tapetum allows animals like cats, moths and owls to view the world in night vision during the dark of night. Now, in addition to many other nocturnal animals, the ten fossilized spider specimens also made use of night vision, as their tapeta is still visible if a light is shined over the fossilized specimen’s eyes. According to researchers, it is not often that a fossilized specimen’s visual system is preserved, but when this occurs, researchers can learn much about the nature of the specimen that is fossilized. The manner in which an animal’s eyes are designed can reveal a whole lot about how the animal survived. Most animals that possess tapeta used night vision abilities in order to hunt at night, in other words, these ten spiders were all nocturnal hunters. Although the ten spider specimens encased within the fossils are now extinct, they were quite similar to modern jumping spiders.

Do you know of any other arthropods that possess night vision?

The Deadliest Group Of Spiders May Comprise As Many As 200,000 Species, Some Of Which Could Exist In The US

Entomologists often claim that is is highly unlikely to die as a result of being injected with the venom of spiders. While this may be true, this claim should not be taken to mean that there exists only a small number of potentially deadly spiders in the world. In fact, there are numerous spider species in the world that can kill an adult human within minutes. In fact, there could be in excess of 200,000 deadly spider species in the world, and this massive amount is only counting the species that may belong to one particular group of deadly spiders. Luckily, like many potentially deadly spiders, the particular spider group in question is almost never encountered by humans, as it dwells beneath rocks located in harsh desert landscapes. This species-rich group of spiders are known as six-eyed sand spiders, and their currently exists a whopping 38,000 documented species roaming the earth.

Happily, all documented six-eyed spider species are known to dwell in isolated regions outside of the United States, but the closest relative of six-eyed spiders are recluse spiders, which are well known to exist all over the world. Six-eyed spiders belong to the Sicariidae family, and all 38,000 known species that belong to this family dwell within southern Africa. However, experts believe that there may exist as many as 200,000 Sicariidae species, as the species that have been found were not easy to locate given how well they blend in with the sand that is their habitat. It is firmly believed by experts that many more Sicariidae species will be discovered with further field research. Therefore, the possibility of discovering one of these highly venomous spiders hiding within the deserts of America is not beyond the realm of possibility. The venom of the six-eyed spider is believed to be the most potent of any spider venom on record, but luckily, they are shy and will only bite when provoked, or, as in most real-life cases, when humans accidentally make contact with them.

Have you ever heard of six-eyed spiders? Are you willing to believe that there may exist as many as 200,000 species, which far outnumbers the total amount of currently documented spider species?




The Oldest Spider Web Ever Found Was Built More Than 140 Million Years Ago

Some arachnid enthusiasts insist that spiders are, in fact, beautiful creatures. Many arachnid lovers are convinced that the supposed elegance and charm of spiders is tragically lost on those who fear them. Although beauty is subjective, most people would probably agree that animals such as horses, lions and peacocks are more deserving of the label than spiders. That being said, there is no denying a spider’s talent for web design. Of course, spiders are not tech savvy creatures with a knowledge of computer software; instead, spiders are capable of building awe-inspiring silk webs that even the most fearful of arachnophobes could not disparage. Not all spider webs appear as silken masterpieces of near perfect symmetry. The group of arachnids known as orb-weavers are the most gifted of all web-building spiders. While orb-weaver spiders create the most geometrically sound web designs, all spider webs are built to last, as they are more durable than steel and tougher than kevlar. However, as durable as spider webs are, it is odd to find one that has lasted for 140 million years, but this is exactly what a group of researchers recently found in England.

24183849 - zebra jumping spider - salticus scenicus

It should be mentioned that the ancient spider web was fossilized in amber, but this is still impressive considering that amber fossils only form around objects that are durable enough to make an impression on viscous tree resin. This discovery also shows that a spider web can maintain structural integrity during the long process of amber-fossilization. Upon microscopic examination, researchers found that the fossil contained a sticky substance that modern spiders use to fuse silk strings together during web construction. Spiders adapted the ability to produce this sticky substance in order to capture a greater amount of prey, as well as larger sized prey.  According to paleobiologist Martin Brasier of Oxford University, these droplets indicate that spiders coevolved with insects, which is notable considering that researchers have long assumed that spider evolution occurred later than insect evolution. The fossilized web was created by an extinct ancestor of orb-weaver spiders during a time when dinosaurs roamed the earth.

Do you believe that possessing eight legs gives spiders a specific advantage that has not yet been considered by scientists?




Spider Control Tips | J&J Exterminating

  • Avoid keeping clothing and shoes on the floor, especially if in an area known for spiders; consider storing inside plastic containers.
  • Seal cracks and crevices around the home.
  • Vacuum/sweep away webs in and around the home.24183849 - zebra jumping spider - salticus scenicus
  • Shake out all clothing that has been in the laundry basket before wearing/washing.
  • Keep garages, attics and basements clean and clutter free.
  • If a spider bites you, contact your primary care physician for medical advice.
  • If you have an infestation in your home, contact a licensed pest control professional to inspect and treat the pest problem.

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