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Show ffllje ffltmgg-fflefo- Nephl, Utah Page 3 g ,:iiiIiiii1iiiiIiiiiIiiiiIiihIiiiiIiiiIIiiiiIiii'IiiiiIiiiiIiin The aggressive house spider (left) appears to be on the rirse in Utah. There are no brown recluse spiders (right) in Utah, according to Utah State University researchers. Originally from Europe, the aggressive house spider was first identified in the port district of Seattle in the 1930s. They have since spread throughout the Pacific Northwest. Roe said it is not surprising the aggressive house spider has been found in Utah considering how common they are in Washington and Oregon. But until now, he never thought of them as being very common in Utah. "I used to think they were less abundant here, but based on these latest samples, I'm beginning to think otherwise," he said. Although the brown recluse Wednesday, September spider (similar in color to the aggressive house spider but much smaller) continues to be blamed for many bites in Utah, Roe said there has never been a brown recluse specimen documented in Utah. The aggressive house spider, contrary to what its name implies, does not actively seek out humans to bite. It does tend, however, to act more aggressively toward other spiders in driving them from their habitat. And if caught in clothing, Roe said it is more likely to bite you than other spiders. According to a 1991 copyright report in the Lewiston Morning Tribune, Roger D. Akre, a Washington State University entomologist, said he has a video of an aggressive house spider being harassed with a paint brush when suddenly the spider "jumps up and bites the paint brush and hangs on like a bulldog," the report states. This spider is also known as the hobo spider. It's believed it got this name because it is frequently found in train cars around the Northwest, he said. Spraying for these spiders is most effective with residual 1, 1993 likely found - in rock walls, wood piles, cracks and crevasses in the foundations of houses, along baseboards h corners. and in -- hard-to-reac- Because they are poor climbers, it is more likely theyll spin their tubular webs than in on ground-leve- l higher locations, he said. "Anything you can do to eliminate their habitat is a plus," he said. If you think you've spotted this spider, don't smash it. Instead, Roe suggests putting on gloves and protective clothing, catching it in a jar and sending it in to him at USU Plant and Pest Diagnostic insecticides such as those containing either Dursban or Baygon. Treat in places where these spiders are most Lab, Logan, UT 84322-530- 5. Spiders on the rise By John DeVilbiss Utah State University An unprecedented number of aggressive house spiders were documented at Utah State University's week.' bug lab this The sudden barrage of specimens that have come into the school's diagnostic laboratory may reflect a significant in- population crease in Utah of this spider whose bite is very similar to the deadly brown recluse. Seven of the eight specimens came from the Logan area, including one found crawling in the diagnostic laboratory at USU. The eighth spider was sent from Heber City, said Alan Roe, USU Extension insect diagnostician. D Prior to this week, the lab recorded receiving only two specimens of these spiders period. during a two-yeWith this marked increase of specimens, Roe said chances are good there are many more of these spiders to be found between Wasatch and Cache counties. "The rate they have come into the laboratory is somewhat, alarming,.",, said Jay ar Six month introductory credit card rate. Act before December 31, 1993. .if Karren, USlf Extension, en- i . - tomologist. "We don't want to cause a panic, but at the same time, people need to know these spiders have been found." Roe said his concern about the aggressive house spider is its potentially harmful bite. Of the 12 common spiders that live in Utah, he said, only the black widow comes close to the aggressive house spider as a major health threat. Like that of the brown recluse, the bite of the aggres-siv- e house (Agelenidae: spider Tegenaria agrestis), is a nasty one. Both inflict necrotic bites bites that cause skin tissue in the wound region to actually die and slough off. The male aggressive house spider, which inflicts the nastiest wound, is generally light brown, with some striping on the body. It is about the size of a quarter. It moves quickly, but is a poor climber, mostly due to its weight. If you look closely, you can see chevron markings on its abdomen, he said. This spider spins a web that is funnel-likThis, howis not ever, unique to this spider since there are several harmless species in this genus of funnelweb spiders, Roe said. There is very little pain initially associated with the bite of this spider. It's similar to , a pin prick. But within about an hour, Roe said you will notice reddening and swelling around the bite that can continue for up to 18 NO ANNUAL FEE CREDIT CARD FOR LIFE. , e. ; ! ; ; I hours. During this period. Roe said those who have been bit-- ! ten by this spider complain of severe headaches, blurred vi- sion and nausea that can per-sist ;4 ; : . . '! several days. Within about 36 hours of the bite, the skin at the bite site begins to die and slough off. The wound continues to ooze and fester. Healing is slow. Sometimes it takes up to six months. In rare incidents, the bite of this spider causes damage to kidneys and other internal organs from lesions. 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