However, the brown recluse does not occur in the Pacific Northwest. The only specimen of the brown recluse ever collected in the Pacific Northwest was found in Prosser in 1978. This spider came ... Tegenaria agrestis, the aggressive house spider, is one of the most common spiders found in houses in the Pacific Northwest.
cru.cahe.wsu.edu/CEPublications/eb1548/eb1548.html
Not every brown spider is a dangerous Brown Recluse or Violin Spider (Loxosceles sp.). If you live in the Pacific Northwest, it is vanishingly unlikely that you will encounter one, regardless of what you hear. ... Callobius severus; Large, interesting spiders who only live in the Pacific Northwest...
www.nwspiders.org/ www.nwspiders.org/
Apply online for a FREE Spider Identification Chart with FIRST AID spider bite procedures - color A4 size - Ready Reference Guide to common USA spiders. ... They are found mostly in the Pacific Northwest states.
www.termite.com/spider-identification.html www.termite.com/spider-identification.html
Crab spiders can be either yellow or white, and the young spiders change colors much faster than older ones. They also change to white faster than to yellow. As a bee or other insect approaches the spider will crouch down on its hind legs, then once the victim is within range she will pounce and bite.
share3.esd105.wednet.edu/rsandelin/Fieldguide/Animalpag... share3.esd105.wednet.edu/rsandelin/Fieldguide/Animalpages/Insects/Spiders.htm
There are perhaps more than 15,000 kinds of insects to be found in the Lowland Northwest and new species are discovered annually. To identify an insect even to genus can be difficult and so in some cases identifying an ... Introduction Spiders Bees and wasps Dragonflies Beetles Flies Butterflies and Moths Other insects...
share3.esd105.wednet.edu/rsandelin/Fieldguide/Animalpag... share3.esd105.wednet.edu/rsandelin/Fieldguide/Animalpages/Insects/Insectsintro.htm
The hobo spider (Tegenaria agrestis) may be guilty of most of the spider bites that are misdiagnosed as brown recluse spider bites in the Pacific Northwest. Hobo spiders produce venom that, when injected, can result in a necrotic lesion developing that can destroy skin tissue and take several months to heal.
www.leupitz.com/gen_spider.html www.leupitz.com/gen_spider.html
Where can I find information about common spiders of Washington? Numerous guidebooks provide general information about spiders. One Washington State University Internet source of information about Pacific Northwest spiders can be found at EB 1548: Spiders.
www.puyallup.wsu.edu/plantclinic/faqs/faqs_spdrs.html
Editorial Note: Although envenomating spider bites in the Pacific Northwest often are erroneously attributed to brown recluse spiders, most such bites are caused by hobo spiders (formerly also known as "aggressive house" spiders).
aepo-xdv-www.epo.cdc.gov/wonder/prevguid/m0042059/m0042... aepo-xdv-www.epo.cdc.gov/wonder/prevguid/m0042059/m0042059.asp
Identification and biology of three dangerous spiders ... The aggressive house spider is found throughout the Pacific Northwest, Idaho and Utah and appears to be rapidly expanding its range.
schoolipm.ifas.ufl.edu/doc/spider1.htm schoolipm.ifas.ufl.edu/doc/spider1.htm
Keywords: Keys (spider), spiders, Douglas-fir, true fir, Pacific Northwest ... Griswold, C.E. 1987. A key to arboreal spiders of Douglas-fir and true fir forests of the Pacific Northwest.. Gen. Tech. Rep. PNW-GTR-207. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.
www.treesearch.fs.fed.us/pubs/8724