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Spiders in Salt Lake City Spiders are often the creatures in which are depicted in the movies as horror creatures. Arachnophobia is a fear in which people suffer from a fear of spiders. Even though spiders are portrayed in a negative manner, they are extremely helpful in our environment…
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Download file to see previous pages... One of the spiders, which have recently become a primary concern of those living in Salt Lake City is the Hobo spider. The scientific classification for the Hobo spider is Tegenaria agrestis. It is in the family Aglenidae. It is not originally native to North America, but was brought over when Western Europeans began to colonize North America. The species was originally discovered in Europe by C.A. Walkenaer in 1802 and then was rediscovered in the United States in 1936 by Harriet Exline. The appearance of the Hobo Spider varies greatly, however there are a few core characteristics, which make it easier to identify. The abdomen has v-shaped patterns on its abdomen which aim down toward the head of the spider. They also have a light stripe, which runs down the middle of the sternum. Considering the size of typical spiders, the Hobo Spider is of a larger variation, usually ranging from twelve to eighteen millimeters in body length. Compared to other spiders, they have very poor eyesight and lack the normal climbing ability that many other spiders share. There are also sexual differences, which allow for further identification. The male Hobo Spider has two pedipalps in front of its two front legs, which is homologous to the male gentials in humans. The female Hobo Spiders have a much larger abdomen than the male Hobo Spider and lack the pedipalps (Ethan 4-12). ...
After the new spiders hatch, they spend a majority of the first part of their life underground feeding and growing. After they have reached maturity, they begin searching for a mate. The females remain stationary and build their webs. The males come to the females. After mating, the males die first and then are followed by the females. The cycle then repeats itself over again. In the predator-prey relationship, the Hobo Spider does not fall at the top of the food chain. The Hobo Spider has three natural enemies that control the population: the preying mantis, wasps, and other spiders. Hobo Spiders especially have the disadvantage compared to other types of spiders. The first is that they lack the climbing ability and ability to escape from other spiders’ webs, which leaves them extremely vulnerable. The Hobo Spider tends to feed on smaller insects that it can catch, due to the type of web that it spins. It is known as a funnel web spinner. They are typically long in shape and have an empty hole in the middle in which the spider sits waiting for prey. Compared to other types of webs, they are not as thick (Vest). The venom of the Hobo Spider is potent. One important fact regarding bites made by the Hobo Spider is that those made in defense typically do not carry venom, compared to if it was the result of the spider hunting. This is because venom requires energy for the spider to make, so the spider tries to conserve this. The severity of the bite is often dependent on where the bite is located and how old the spider is. Another sexual difference between these spiders is that the male’s venom is more potent than that of the female. The venom is similar to the brown recluse in that it is a necrotic ...Download file to see next pagesRead More
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