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House centipede moulting its exoskeleton.

Moulting is necessary for certain insects to grow, it occurs when the insect outgrows its outermost “skin” and must be shed.

For some insects, a big benefit to having a system of molting for growth is that it allows damaged tissue and missing limbs to be regenerated or substantially reformed.

Complete regeneration may require a series of molts, the stump becoming a little larger with each molt until it is a normal or nearly back to normal size.

A major disadvantage to having to molt as a system of growth is that the animal in question is entirely incapacitated during the process.

The insect is completely vulnerable to a predator attack while undergoing molting.

Information sourced from the ThoughtCo.com article in our story, which goes into more detail about the moulting process.