Female butterflies go for sparkle - not size - when choosing to mate

Size doesn't matter, at least not the size of the eyespots on a male butterfly's wings when female butterflies consider potential mates.
Instead, females are attracted to the "sparkle" created by the ultraviolet reflectivity of the pupils, the white circles at the center of eyespots, according to new research from University at Buffalo biologists.

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<p><a href="http://www.physorg.com/news4845.html">Female butterflies go for sparkle - not size - when choosing to mate</a></p> <p> Size doesn't matter, at least not the size of the eyespots on a male butterfly's wings when female butterflies consider potential mates. <br>Instead, females are attracted to the "sparkle" created by the ultraviolet reflectivity of the pupils, the white circles at the center of eyespots, according to new research from University at Buffalo biologists.</p>