I know male HBFs have quite pronounced sex brands, but the black coloration in this one was heavier than I've seen before.
I'm afraid this was the best shot I got because soon after another HBF came along and the pair shot away and I didn't see this individual again.
I have added a shot of a more normally marked male HBF immediately below for comparison.
![Image](http://i236.photobucket.com/albums/ff241/si_mac67/Butterflies/HBFpossab280611AV.jpg)
![Image](http://i236.photobucket.com/albums/ff241/si_mac67/Butterflies/HBFmale280611AV.jpg)