English: In both metamorphosis stages, the insect begins the cycle as an egg. In a complete metamorphosis the insect passes through four distinct phases which produce an adult that does not resemble the larvae. In an incomplete metamorphosis an insect does not go through a full transformation, but instead transitions from a nymph to an adult by molting its exoskeleton whenever it becomes too tight.

http://bugguide.net/node/view/488419/bgimage

https://www.cals.ncsu.edu/course/ent425/tutorial/morphogenesis.html