LEAF BEETLE (showing iridescence)
Structural details of the chitinous exoskeleton are responsible for the iridescence shown here. Both larvae and adult (imago) beetles live by eating the leaves of the plant.
This beetle is from Europe.
Chrysolina fastuosa belongs to the group of insects with complete metamorphosis during development. The larvae are radically different from the adults in the lifestyle and physique. Between the larval stage and the adult stage is the pupal stage , a resting period, where the beetle inner and outer bodies change.
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Iridescence in Nature