What is the dual purpose of the large, translucent areas on the Atlas moth's wings known as eyespots?

Answer

Startling attackers or acting as sacrificial targets

The eyespots serve to either startle a potential attacker with a sudden flash of perceived 'eyes' or act as a sacrificial area that can be struck without fatally damaging the moth's central body.

What is the dual purpose of the large, translucent areas on the Atlas moth's wings known as eyespots?
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