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The spiders are an extremely large and diverse group with thousands of species and while most are harmless a few are dangerously venomous. Spider identification can be very tricky especially once you get below the level of the family classification.
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www.livingwithbugs.com/spider_identification.html
www.livingwithbugs.com/spider_identification.html
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About spiders ... At the right is an unidentified member of the genus Araneus, the largest of all spider genera, with over 1,500 species found in it worldwide. Araneus spiders are medium-size species and their abdomens are often brightly colored.
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www.backyardnature.net/spiders.htm
www.backyardnature.net/spiders.htm
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Like other arachnid species, spiders are terrestrial, although a few have adapted to freshwater life by trapping air bubbles underwater and carrying the bubbles with them. Spiders are numerous and occur worldwide.
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www.everythingabout.net/articles/biology/animals/arthro...
www.everythingabout.net/articles/biology/animals/arthropods/arachnids/spiders/
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Spiders: Learning More About Spider Biology ... Spiders evoke a combination of interest, horror, and curiosity in people of all ages. Because there is so much intrinsic interest in spiders, they have turned out to be excellent creatures to use to entice children and adults into learning more natural history and biology.
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www.entomology.cornell.edu/SpiderOutreach/
www.entomology.cornell.edu/SpiderOutreach/
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Areneus diademata and other orb-building spiders begin their webs with a central hub (See diagram at right, from The Biology of Spiders, by Rainer F. Foelix, Harvard University Press, 1982). The hub is surrounded by a 'free zone', in which the spider can move around unhampered by intricate spiralling threads.
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www.wellesley.edu/Biology/Web/Species/aspidergarden.htm...
www.wellesley.edu/Biology/Web/Species/aspidergarden.html
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Biologists have discovered dozens of species of jumping spiders that are new to science, giving scientists a peek into a section of the evolutionary tree previously thought to be sparse. ... Some of the species discovered are highly distinctive, occupying "lonely" branches on the evolutionary tree of jumping spiders.
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www.sciencedaily.com/releases/2009/03/090325091815.htm
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He believes the spiders, which have a leg-span of up to 9cm, may be a new species that must be preserved. "It's an extremely exciting find because they are probably a new species or a species that we thought had been extinct in this country for thousands of years," he said.
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www.rense.com/general11/wind.htm
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Richman has formally described nine new species of spiders in his career. The last was another jumping spider, Thiodina hespera, found in the western part of the United States, which he described in a 2004 Journal of Arachnology article along with Richard S. Vetter of the University of California, Riverside.
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www.nmsu.edu/~ucomm/Releases/2006/april/spiderman.htm
www.nmsu.edu/~ucomm/Releases/2006/april/spiderman.htm
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A University of British Columbia researcher has discovered dozens of species of jumping spiders that are new to science, giving scientists a peek into a section of the evolutionary tree previously thought to be sparse. ... Jumping spiders are found in every part of the world except Antarctica. Capable of jumping 30 times...
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www.eurekalert.org/pub_releases/2009-03/uobc-nso032409....
www.eurekalert.org/pub_releases/2009-03/uobc-nso032409.php
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