N is for nymph. Cicadas spend most of their life in their nymph form, burrowing underground, drinking the fluids of plant roots, growing larger… waiting for the day they emerge and transform into adult cicadas. Here is a photo of a tiny 1st instar nymph, and this is a video of full-grown nymphs that have emerged from the ground:
Magicicada cicada nymph mania from Cicada Mania on Vimeo.
Neocicada hieroglyphica, which was covered in Cicada Alphabet H.