Hermann Brehm / Cloud forest with red flowering trees {Triplaris caracassana} Henri Pittier NP, Venezuela, South America

Mark Moffett / Photographer, Mark Moffett on assignment, National Geographic May 1999, shown sitting near Triplaris Ant tree, Peru

Mark Moffett / Photographer, Mark Moffett on assignment, National Geographic May 1999, shown sitting near Triplaris ant tree, Peru

Mark Moffett / Ant (Pseudomyrmex sp) biologist Doug Yu plucks ants from Palo Santo (Triplaris sp) tree whose base cleared of vegetation by the ants, Peru