Immature forms

• Caterpillars, e.g
• Second of Variations Ravel composed for 16 17A?
• Some creepy crawlers
• Bog area oddly contains river grubs
• Preadult insects
• Grubs, e.g
• Insect stages
• Ones in need of a metamorphosis

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
plural of larva (q.v.).

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Larva \Lar"va\ (l[aum]r"v[.a]), n.; pl. L. Larv[ae] (l[aum]r"v[ae]), E. Larvas (l[aum]r"v[.a]z). [L. larva ghost, specter, mask.] (Zo["o]l.) Any young insect from the time that it hatches from the egg until it becomes a pupa, or chrysalis. During this time ...