However, in the unlikely event of a bite from this species, a positive identification of the spider by an expert should be made and medical attention sought if any reaction persists for more than a short time. Their size becomes at least six times longer, including the legs. Their legs are very long, and this is why they are often termed as daddy long legs spiders. Excluding the legs, their size ranges between 7-8 mm. Most reputable sources, including the University of California, Riverside, still say that this species would never be considered as harmful to humans. The cellar spiders are thin and fragile creatures that are generally longer than most other species of spiders. Recently, however, it was shown that the tiny fangs (about 0.25 mm) were actually capable of piercing human skin in a test done on the US television show, Mythbusters, but the stinging sensation produced was very short-lived. and like to live in the dark, damp places such as basements, garages, crawl spaces, and cellars. These spiders are common throughout the U.S. Adults grow around 0.25 inches in body size with front legs around 1.75 inches. Because they devour so many other kinds of spiders and insects, many people tolerate their presence in their cellars. Sometimes called daddy long legs, the long-bodied cellar spider has long, thin legs relative to their body. Often, they capture prey much larger than themselves, including Wolf Spiders Missouri Department of Conservation, crane flies, and others. It had been thought that the fangs of this spider were incapable of piercing human skin. Cellar spiders eat other small arthropods (insects, spiders, and so forth). However, the venom is not actually that potent, even for insects. The myth probably grew from observations that the Daddy-long-legs Spider will kill and eat a Redback Spider.
However, there is no scientific evidence to back this up. There is a persistent belief that the Daddy-long-legs Spider has the most toxic venom of all spiders.