Originally Posted by
Geoff F
It is a rather bright strong contrast scene which can give the impression of over sharpening.
If you look closely at that left eye there is a narrow pale surround on the top; and a few other areas. That sort of effect is often found to be caused by excessive sharpening. But there can be other reasons; particularly the light angle and it is often impossible to choose your angle when photographing live insects. Somebody else might be able to give a scientific explanation.
Anyway, it is a good image of a tricky subject. I always get problems with over exposed 'hot spots' with them.