In the next shot I zoomed in on that area inside the white rectangle, to give you a better look.
So that’s five eyes on the fly. Have a look at the photo below and you'll see there are five eyes on this European Wasp too.

I started this by saying insects come in lots of shapes and sizes. That kind
of diversity applies
to insect sight too. For example, it is believed that some insects see colours and some don't. Some
have small eyes, while a dragonfly has huge compound eyes covering most of its
head. Those elaborate compound eyes on the dragonfly would help it fly with a
lot of precision and with lots of speed, seeing other insects and not bumping
into things.
So now we know all that stuff, how many eyes do insects have? The answer is: usually two, but sometimes as many as five.
How many eyes do spiders have?

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A dragonfly's compound eyes can cover most of its head |