Many
insects change their form four times in their life.
This
is called undergoing a METAMORPHOSIS.
The
young of these insects look nothing like their parents until
they are grown.
There
are four stages in the lives of these insects:
Stage
1
Egg
 Stage 2
Larva

Stage
3
Pupa

Stage
4
Imago
(adult insect)

The
larva of butterflies and moths are called caterpillars.
The larva of flies
are
called maggots.
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