What Is The Nymph Stage Of An Insect?

What Is The Nymph Stage Of An Insect? Nymph: The immature form of insects with simple metamorphosis. (Stages between molts of the exoskeleton are called instars). What is the nymph stage of metamorphosis? In biology, a nymph is the immature form of some invertebrates, particularly insects, which undergoes gradual metamorphosis (hemimetabolism) before reaching its adult