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Post your arthropod photos here

This one is not alive, since it's estimated to be 350 million years old.
It's a fossilized Trilobite .... an ancient sea bug.

i-PH847fF-X3.jpg
 
I mean the parts that are solid green without dark spots. They look like partial covers on the dorsal surfaces of the eyes.
Well, I'm afraid I don't know enough about dragonflies to say. Insects aren't really my field. I have always understood that they don't have eyelids, just large, compound eyes, but it seems it's a bit more complicated than that:
 
I mean the parts that are solid green without dark spots. They look like partial covers on the dorsal surfaces of the eyes.
No it is all just the compound eye. DFs often have some variation in coloration that can be ID diagnostic. Additionally there is often an apparently moving pseudo pupil which occurs because the ommatidia that one observes "head-on" (along their optical axes) absorb the incident light.

Black Darter (Sympetrum danae) female head on, the brown, yellow and black parts are all "eye" consisting of ommatidia
insect Black Darter f A001_002_26-08-19 by Lester W, on Flickr
 
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