Posted by Kahis on 21-07-2006 17:02
#6
Stephen wrote:
I think I am right in saying only some families have big-eyed males and small-eyed females?
Yes. But there are very few families where all species have males with eyes touching or approximated. For example in Muscidae we see the full range of options, from males and females virtually identical in head shape to very strong sexual dimorphism.