This caterpillar always looks like this regardless of what happens during the upcoming winter. As a result, some of the color and hair variations that we see each fall are a result of these different species.Īccording to folklore, someone would assume a mild upcoming winter from seeing the caterpillar above, but in actuality this is a Yellow Bear Caterpillar ( Spilosama virginica). In addition, there are approximately 260 species of tiger moths (the adult of the woolly bear caterpillar) in North America, and each species has slightly different color patterns and hair coverings. With each successive molt, their colors change, becoming less black and more reddish. The caterpillars shed their skins or molt six times before reaching adult size. Also, the coloring indicates the age of the woolly bear caterpillar. Thus, the width of the banding is an indicator of the current or past season's growth rather than an indicator of the severity of the upcoming winter. This results in narrower red-orange bands in its middle. The better the growing season is the bigger it will grow. The woolly bear caterpillar's coloring is based on how long caterpillar has been feeding, its age, and species. Folklore Demythed:Įven though it is widely believed that the woolly bear caterpillar can predict the upcoming winter's severity, the truth is that this caterpillar can't predict what Old Man Winter has in store for us in the upcoming winter. Other festivals are held in Beattyville, KY (began in 1987) Lewisburg, PA (began in 1997) Oil City PA (began in 2008) and Lion's Head, Ontario (began in 2011). Sunday worm races are for fun and small prizes and will continue throughout the day as long as there are race participants. At that time, the official winter forecast will be declared. Races continue all day until the grand final about 4 PM when the champion worm and trainer is crowned (and paid!). They begin their worm races around 10:20 AM, or as soon as the first heat, on Saturday morning. Also, every 3rd weekend in October the annual Woolly Worm Festival is held in Banner Elk, NC. Festivities include a parade, woolly bear races and an "official" analysis of the woolly bears and forecast for the coming winter. It is claimed to be the largest one-day festival in Ohio. The festival is the brainchild of legendary Cleveland TV personality Dick Goddard, longtime weatherman at WJW-TV. Since 1973, the residents of Vermilion, Ohio have held an annual " Woolly Bear Festival". The popularity of the woolly bear caterpillar has resulted in several festivals honoring them. On the other hand, woolly bear's crawling on a northward path would indicate a mild winter. It is said that woolly bear's crawling in a southerly direction are trying to escape the cold winter conditions of the north. The final version deals with the woolly bear caterpillar's direction of travel of the worms. So, if its coat is very woolly, it will be a cold winter. The first one says that the woolly bear caterpillar's coat will indicate the upcoming winter's severity. In addition, the woolly bear caterpillar has 13 segments to its body, which traditional forecasters say correspond to the 13 weeks of winter.Īs with most folklore, there are 2 other versions to this story. If the tail end is dark, the end of winter will be cold. If the head end of the caterpillar is dark, the beginning of winter will be severe. The position of the longest dark bands supposedly indicates which part of winter will be coldest or hardest. Similarly, the wider the middle brown band is associated with a milder upcoming winter. The longer the woolly bear's black bands, the longer, colder, snowier, and more severe the winter will be. The Woolly Bear ( Pyrrharctia isabella) Caterpillar is found across the United States, Canada, and Mexico.Īccording to folklore, the amount of black on the woolly bear in autumn varies proportionately with the severity of the coming winter in the locality where the caterpillar is found. Whatever name they go by, they are often found in the autumn after they have left their food plants (variety of grasses and weeds including plantain, dandelion, and nettles) in search of a dark and sheltered spot where they can hibernate as larvae for the winter. Yet another name for this caterpillar is the Hedgehog Caterpillar, because it curls into a tight bristly ball and “plays dead” when picked up or disturbed. This same caterpillar is called the woolly worm in southern United States. Most people in the Midwest or New England have heard at one time or another that if you want a forecast for the upcoming winter that you should just look for a woolly bear (black at both ends and a reddish brown or rust colored in the middle) or fuzzy bear caterpillar. Woolly Bear Caterpillar: A Winter Weather Predictor or Not?
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