Stage during an insect's metamorphosis (5)

I believe the answer is:

larva

(Other definitions for larva that I've seen before include "immature six-footer?" , "Caterpillar, for example" , "Worm-like insect before metamorphosis" , "Immature form of caterpillar" , "Tadpole or caterpillar, say" .)

I've seen this clue in The Washington Post.

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