Nymphs line a rave dancing?

• Preadult insects
• Caterpillars, e.g
• Future chrysalides
• Young eels
• Ones in need of a metamorphosis
• Grubs, e.g.
• Eg, caterpillars
• Immature insects
• Doodlebugs and polliwogs

Wiktionary Word definitions in Wiktionary
n. (en-irregular plural of: larva)