Salvelinus is an old name for char and fontinalis tells you that the fish lives in springs. Click here to see how insects are classified. Most insects completely change their size, shape and colour as they go through their life cycle. These changes are called metamorphosis. There are three basic kinds of life cycles in insects.
Some insects go through no metamorphosis at all.
They hatch from their eggs looking like tiny versions of adults. They simply grow larger over time, shedding their outer skin as it becomes too tight to reveal a new, larger skin underneath. In a complete metamorphosis the wings of the insect develop internally during the larval stages. The larval stages look quite different from the adult. Between the last larval stage and the adult stage there is a pupal stage where the insect is not active.