Other "Blue" butterflies seem to have he same eye as the Holly Blue.
I'd be interested in seeing other butterfly eye types if you would share pics of them
Thanks for that ZM. Good stuff.
After going out last night to my old school annual old boys supper I discovered another pair of unusual eyes in the mirror this morning. Not pretty:(
You may find this informative, though not very relevant. I think the different types of eyes reflects the fact that the name 'butterfly' covers a group of insects that are less closely related than we assume.