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Wooly Bear Caterpillar

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Have you seen those large spiny and hairy caterpillars abundantly crawling on sidewalks, pathways, bicycle paths and roadways during summer? These are Wooly bear caterpillars, simply called the Wooly Bears. They belong to a large group of moths called tiger moths and usually begin existence during spring as a plant-eating caterpillar.
Wooly Bear Caterpillar
The moth is known to have two different names depending on its two main stages of life.  The adult is named Isabella Tiger Moth and the larva is called the Banded Wooly Worm or in most cases, the Banded Wooly Bear. The larva of the Banded Wooly Bear usually comes from the egg during the season of fall and during overwinters in its caterpillar form when it usually becomes frozen solid. It actually stops with its heart at a standstill, then, followed by its guts, its blood and then the rest of the body. The caterpillar form usually survives by producing cryoprotectant in its tissues. Eventually, when spring comes, it melts out and begins to pupate then becomes a moth and has a few remaining days to search for a mate before it finally expires.

In places with temperate climates, Caterpillars normally become moths within months of hatching. However, in the Arctic it is so much different. The summer time is shorter with only very limited time for growing and nurturing vegetation, hence making feeding time so short, allowing the Wooly Bear caterpillar to feed and look for food for several winters. The process becomes repeated from freezing to thawing, then feeding, then freezing again before finally coming to become a pupa. Some Wooly Bear Caterpillars have been known to go through 14 summers before finally pupating.

The banded wooly bear caterpillar has two black bands, one at each end and has an interesting orange band somewhere in the middle. Some people say that the presence of the wide orange or brown band in the middle determines what kind of winter is coming. In fact, some would even believe and interpret it identifying the Wooly Bear Caterpillar as the forerunner of the ruthlessness or perhaps unkindness of winter.

True or not, the presence of Wooly Bear welcomes the coming of winter.
Wooly Bear Caterpillar

Wooly Bear Caterpillar

Wooly Bear Caterpillar

Wooly Bear Caterpillar

Wooly Bear Caterpillar
Wooly Bear Caterpillar

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