Immature insect (4)
'immature insect' is the definition.
(immature form of an insect)
This is all the clue.
(Other definitions for larva that I've seen before include "Volcanic outpouring" , "Maggot" , "Immature stage of an insect" , "Wriggler" , "Maggots" .)
'immature insect' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for pupa that I've seen before include "So peacock may have appeared" , "middle stage" , "One is growing" , "not yet adult" , "appearance of immaturity" .)