Eg, caterpillars

• Tadpole, caterpillar, etc.
• Bog area oddly contains river grubs
• Cocoon constructors
• Some creepy crawlers
• Grubs, e.g.
• Insect stages
• Future monarchs, e.g
• Ones in need of a metamorphosis

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

WordNet Word definitions in WordNet
n. the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose [also: larvae (pl)]