False Black Widow Spiders – How To Spot Them And, Are They Dangerous?
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Of the many spiders in the world and around the United States especially, there is perhaps none more feared than the black widow spider. The fear is not unfounded. Black widow spiders are one of only two species of spiders in North America that are known to have venom that is extremely poisonous to humans. So poisonous in fact, that it can in some instances even cause death. A bite from a black widow spider will also attack the central nervous system and the respiratory system, causing severe pain and agony. It’s no wonder then that the black widow is a spider to be extremely cautious of, and to stay away from whenever possible. However, there’s a spider that often gets confused with the black widow and so much so that it’s even been given the nickname, false black widow spider.
The spider that’s most commonly known as being a false black widow spider comes from the family Steatoda and among that family there are about 120 different species of spiders. These spiders are often confused with being true black widow spiders because they do have a very similar shape and are usually about the same size. The two actually look so alike that to be able to tell the difference between certain species of Steatoda spiders and a true black widow, you need to look at their abdomen. Here, true black widow spiders will have either a series of red dots, or two small red triangles. If you see these, you know that you are seeing a true black widow spider. If you don’t see them, it’s most likely a Steatoda.
The main difference between a false black widow spider and a true black widow, is that if a Steatoda spider bites you, it’s harmless. While you may have some pain around the area of the bite, it is not poisonous to humans. One of the similarities between the bites of a false black widow and a real one is that bites to humans are extremely rare. Both like to inhabit places that are dark and undisturbed, such as in undergrowth in the woods or in corners of outbuildings. However, because dark, undisturbed and barely inhabited areas include places such as garages, sheds, and barns, it is very possible for a human to cross paths with a false or true black widow spider.
In any case, whenever you see a spider that you’re unfamiliar with or that you think may be either a black widow spider or a false black widow, it’s best to kill it or to at least stay away. Killing it may not be necessary, especially in the case of a false black widow, but if you’re unsure, you definitely don’t want to keep a possibly poisonous spider around your home.

























