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Number of Eyes on a Butterfly

How many eyes does a butterfly have?

2.

A butterfly has 2 eyes which are both compound eyes. Each compound eye consists of thousands of independent ommatidia, which are sensory columns having their own lens, cornea, and photoreceptor cells just like that of an single simple eye. Each ommatidium delivers one pixel of an image to the insect brain.

This fact is verified on : March 29, 2010.





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