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Insect Molting Process (in Pictures)

Information | Process


The molting process concerning insects is one of its more fascinating qualities.

Molting is the process by which insects grow. Generally accomplished through the early years of the insect's existence, molting allows the body of the insect to expand under controlled and protected conditions. In comparison, our (human) bodies expand with the growing of our bones and muscles as we age. Insects, on the other hand, utilize what is called an exoskeleton. This exoskeleton is basically their underlying bone structure that is located on the outside of their bodies with corresponding organs and muscles located underneath this hard shell. So in order for the insect to grow - i.e. increase in size - the insect must shed its current skin in favor of the new skin underneath. This process is known in the insect world was molting.

To undergo the process of molting, an insect must begin to take in air or water by either swallowing it in naturally or raising its internal blood pressure. This instigates the process of molting that begins. The result is a soft, expandable exoskeleton suitable for further, albeit limited, growth. This process is repeated several times during the life span of an insect depending on the species. The new exoskeleton will eventually harden and retain the original coloring of the insect as it matures and is exposed to the elements and everyday wear-and-tear.

Depending on the species, molting can actually occur about 5 to 60 times in the life span of an insect and is generally regarded as one of the most vulnerable processes that an insect can go through. Yet this process is naturally required by insects to continue to grow into a full adult stage. Not surprisingly, molting is not limited to insect species alone as even spiders and snakes undergo the procedure as needed.

With 2008 having been the 'Summer of the Periodical Cicada', the timing was perfect to receive these spectacular images of the Cicada molting process as submitted from Darla M. of Lancaster, New York. These images show clear detail of the entire process and offer up a glimpse into a world that few of us ever stop to admire. So, with a special thanks to Darla for making these images possible, enjoy.

©InsectIdentification.org (photos courtesy of Darla M. of Lancaster, NY)

Cicada Molting Stage 1 Cicada Molting Stage 2 Cicada Molting Stage 3 Cicada Molting Stage 4 Periodical Cicadas
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