![]() ![]() Pesticides are not recommended because cellar spiders are beneficial, and each spider would require direct application of the pesticide. If cellar spider activity is observed indoors, remove spiders and egg sacs from the building and place outdoors or simply vacuum. There are few exceptions of spiders that spend a lot of time in the water, such as the European water spider ( Argyroneta aquatica ). Legs are long and about 5 to 6 times the length of the body. Females have a body length of around 8 mm (0.31 in), with males slightly smaller. Remove clutter which can serve as a hiding spot for spiders. Pholcus phalangioides Identifying Characteristics: The cephalothorax (head) and abdomen are different shades of brown. ![]() Lower the relative humidity through dehumidifiers and proper ventilation in the areas where cellar spiders are found indoors. To prevent spiders from entering homes and buildings, seal the foundation, inspect any window or door screens for holes, reduce clutter from around the foundation, and reduce any potential food sources for the spiders to keep them from entering or growing high numbers within the facility. In high population levels, their extensive webbing can be a nuisance. Cellar spiders do not do this they simply add new webbing to old ones. Many other spiders eat their old web before producing new ones. Youve probably spotted this long-legged spider hiding in the corner of a house or building. However, in very high populations, they can be considered a pest in a building. Cellar spiders are beneficial because they feed on other insects. Looks-wise, these spiders have spindly legs around four times as long as their bodies with dark nodes at the joints. These spiders do not bite people or pets. Scientists have so far identified 34 native and introduced species of cellar spiders in North America (via the University of Idaho), with the Pholcus phalangiodes, or long-bodied cellar spiders, among the most commonly spotted. Pholcus phalangioides Identifying Characteristics: The cephalothorax (head) and abdomen are different shades of brown. Instead, males often live peacefully with females after mating. Adult cellar spiders live about two years.Ĭellar spiders are not economically or medically important spiders. Interestingly, this is one of the few female spiders that doesn’t eat its mating partner after reproduction. It usually takes a year for the adult to develop from the egg. After the spiderlings hatch, they crawl onto the mother’s body and stay there for a short time. Rather than attaching the egg sacs to their bodies, females carry them in their mouthparts. The eggs sacs contain approximately 10-60 eggs each. They can be found in heated buildings throughout the year.įemale cellar spiders produce about three eggs sacs over a lifetime. Indoors, they are often found in damp cellars, basements, crawl spaces, garages, and dark, quiet places. Close-up view of a cellar spiderOutdoors, cellar spiders are found in naturally protected areas like caves and rock piles. ![]()
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