Starry Night Cracker, Yunguillo, Colombia

Found on probably cow dung. It took me a while to ID it as this species almost always is photographed with its wings fully opened, thus not showing the red. Species in this genus are named crackers for the cracking sound the males are able to produce when flying away. The purpose of the sound is not known, but speculated to to either be a mating call or a territorial warning call to other males.

I can't forget the look the locals gave us. This area doesn't really know tourists, so we're an attraction on its own. And then these total weirdos (us) proceed to chase butterflies through dung, as if chasing gold.