Spiders that we Commonly see in and around Structures
Yellow Sack Spider
The Yellow sack spider is one of the most common spiders in Kentucky that is associated with spider bites in the home. These spiders search for food after dark by crawling around structures. These spiders do not use webs to capture pray and can forage large areas in a single night. They are called sack spiders do to there building a sack like resting area that they spend the day in. These sacks are usually found along the joint between the wall and ceiling of a room. If you poke at the sack the spider may come running out. These spiders can be easily treated with our general spider control methods.
Black Widow Spider
Black widow spider's range includes most warm areas of the United States and the females can be identified by their black body with two red or yellow triangles (usually forming an hourglass shape) on the underside of the abdomen. Black widow spiders construct a irregular tangled web mass, the spider retreats to a central area until a prey item becomes entangled in the web. Webs are most frequently found under boards, stones, along foundation slabs, behind shrubs, and especially where brick or wood siding extends close to the ground. Black widow venom contains neurotoxins, and can cause varying reactions depending on many factors including: where the person was bit, the person's size, how sensitive the person is to the poison, the amount of venom injected, temperature, and other factors not listed here. The bite normally produces a pain similar to a needle stick and diminishes quickly. Symptoms range for a feeling of having a cold to convulsions and death. Anti-venom specific for black widow bites is available to most physicians.
Brown recluse spiders are secretive and found in all types of structures. This spider's range includes the southern, western, and mid-western United States. It is very common in the Owensboro, KY area. Brown recluse are found in bathrooms, bedrooms, closets, garages, basements, cellars, dropped ceilings, ductwork, registers, attics and other areas of a structure that may not be used often. The web is nondescript and found under or within undisturbed items. The spider itself is timid and will usually run if disturbed. Most bites occur when stored cloth items are put on without shaking first, or by rolling over the spider while asleep in bed. The body of the brown recluse is yellow to dark brown and some species have a distinct dark brown violin-shaped mark on the top of the cephalothorax or area containing the legs and head. Another distinctive characteristic of this spider is that it only has six eyes arranged in pairs. Brown recluse venom contains cytotoxens causing necrosis (tissue death) which may cause large ulcerating sores. Reaction to a brown recluse bite may vary depending on the individuals sensitivity. Usually the effects of a brown recluse bite are only in the area of the bit, however in some cases (mostly children or people that were bit multiple times) a systemic reaction may occur. Bites are usually painless, however a localized burning sensation may develop and last 30 to 60 minutes. During the next 1 to 8 hours the area will become increasingly reddened and a pus-filled blister forms in the center. Bacterial infections commonly increase the damage caused by this bite and it is important to see a doctor if you suspect that you have received a brown recluse bite.
The most common Kentucky spiders are quite possibly Wolf spidersas they are found in every corner of the state. Although most people know these spiders to be very large (over one inch in length in some instances) and gray, there are many other different species that can be much smaller and brown or black. Spiders undergo simple metamorphosis in which the spiders hatch from eggs and look like small adults. A wolf spider will shed its skin several times before it is a fully grown adult, and it can live to be several years old. The female wolf spider will lay dozens of eggs. The spiderlings will hatch and be carried on the mother’s back until they are large enough to hunt on their own. In most cases, wolf spiders benefit humans by feeding on all sorts of insects, including roaches and smaller spiders. Wolf spiders are rarely pests, but they sometimes wander into houses, where their large size often frightens homeowners.Because wolf spiders are sometimes seen indoors, and because they are sometimes brown in color, they are often mistaken for brown recluse spiders. If you see a fast-moving, dark-colored spider running on the floor, it is more likely to be a wolf spider than a brown recluse. Brown recluse are very secretive and are rarely seen out in the open. With a little practice, it is easy to tell the difference between wolf spiders and brown recluse.