Immature forms

• Immature insects
• Ones in need of a metamorphosis
• Grubs e.g
• Future monarchs, e.g
• Caterpillars, e.g
• Bog area oddly contains river grubs
• Tadpole, caterpillar, etc.

Wiktionary Word definitions in Wiktionary
alt. (plural of larva English) n. (plural of larva English)

WordNet Word definitions in WordNet
See larva

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 ...