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Topic: Plectreurid spider


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In the News (Sat 19 Dec 09)

  
  Wikipedia: Spider
Spiders reproduce by eggs laid in silk bundles called egg sacs, and the male (usually significantly smaller than the female) is likely to be killed by the female after the coupling, or sometimes before intercourse has occurred.
When sexually mature, a male spider will spin a web pad onto which the contents of the abdominal reproductive organs are discharged and then the seminal fluid is transferred into the cavities of the palpi; when an individual secures a mate he thrusts the palpi one at a time into her abdominal genital openings.
The widow spiders, brown recluse spiders, hobo spiders, and yellow sac spiders are the dangerous ones among U.S. spiders.
www.factbook.org /wikipedia/en/s/sp/spider.html   (2395 words)

  
 Spider - Biocrawler   (Site not responding. Last check: 2007-10-22)
Spiders, unlike insects, have only two body segments instead of three; a fused head and thorax (called a cephalothorax or prosoma) and an abdomen (called the opisthosoma), supported by a hard exoskeleton composed of mainly of chitin.
Some primitive spiders, like the tarantula, have a patch of urticating hairs on their abdomens for defense, which are generally absent on modern spiders.
While venom from either spider can be deadly to children and the infirm, since the development of antidotes to the venoms of both were developed (the funnel web spider in the mid-1980's and the wandering spider in 1996), no humans have died from their bites.
www.biocrawler.com /encyclopedia/Spider   (3379 words)

  
 Discover the Wisdom of Mankind on Spider   (Site not responding. Last check: 2007-10-22)
Additionally spiders have pedipalps (or just palps), which are two appendages next to their mouths that aid in manipulating food and are used by the males in mating.
It is not uncommon for spiders to eat their own web after a period of time to recoup some of the energy used in spinning.
While venom from either spider can be deadly to children and the infirm, since the development of antivenin to the venoms of both were developed (the funnel web spider in the mid-1980's and the wandering spider in 1996), no humans have died from their bites.
www.blinkbits.com /blinks/spider   (4154 words)

  
 Animals: Spider
Reproduction Spiders reproduce by eggs laid in silk bundles called egg sacs, and the male (usually significantly smaller than the female) is likely to be killed by the female after the coupling, or sometimes before intercourse has occurred.
Unlike the other problematical spiders, the females of these most highly toxic of U.S. spiders stay on their web, and the males (which wander around seeking mates) are too small to deliver a dangerous amount of venom.
Spiders, arranged by hunting method and common name Over 37,000 species of spiders have been identified but because of their great ability for hiding it is believed there are near 200,000 species.
www.americanfactfinders.com /Animals/Spider.shtml   (2556 words)

  
 Arthropod Encyclopedia Articles @ 216.92.11.26 ()   (Site not responding. Last check: 2007-10-22)
The muscle system is more or less assisted by hydraulics originated from the blood pressure created by the heart.
The hydraulic system in spiders is especially well developed.
Most arthropods breathe through a tracheal system (exceptions are arthropods like sea spiders, Pauropoda, some thysanurans and some arachnids like many mites who breathe through their body surface instead); a potential difficulty considering that the skeletal structure is external and covers nearly all of the body.
216.92.11.26 /encyclopedia/Arthropod   (799 words)

  
 Spider - Gurupedia
The spider's respiratory anatomy is based on a tracheal system, with each opening to the trachea as an extension of an outer pore reaching from the spider abdomen, protected by spiracles which are pores in the spider exoskeleton, composed of
prey from a series of ducts perforating their jaws, These digestive fluids dissolve the prey's internal tissues.Then, the spider feeds by sucking the partially digested fluids out.
The Brazilian wandering spider reportedly may hitch a ride in clusters of
www.gurupedia.com /s/sp/spider.htm   (2462 words)

  
 Wikinfo | Spider
More precisely, a spider is any member of the arachnid order Araneae, an order
divided into three sub-orders in newer systems: the Mygalomorphae (the primitive spiders), the Araneomorphae (the modern spiders) and the Mesothelae, which contains the Family Liphistiidae, rarely seen burrowing spiders from Asia.
Images, some of which are used under the doctrine of Fair use or used with permission, may not be available.
www.wikinfo.org /wiki.php?title=Spider   (2493 words)

  
 THE INSECTS OF CEDAR CREEK
I have only begun (1997) to become acquainted with the spiders and other arachnids of Cedar Creek, so the following discussion can only be considered preliminary.
Pitfall trapping in CCNHA old fields yields primarily wolf spiders (Lycosidae) and some crab spiders (Thomisidae).
Families collected in old field sweeps are primarily crab spiders (Thomisidae and Philodromidae), Araneidae, Salticidae, Tetragnathidae, and Dictynidae.
www.cedarcreek.umn.edu /insects/031000n.html   (87 words)

  
 Spider Veins Face   (Site not responding. Last check: 2007-10-22)
Spiders Long-jawed orb weaverspider Scientificclassification Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Araneae Families
In geology, a vein is a regularly shaped and lengthy occurrence of an ore ; a lode.
The face is the front of the head.
www.witchware.com /File/2273-Spider.Veins.Face.Html   (479 words)

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