Mark Moffett / Semi-vegetarian army ant (Labidus coecus) swarm catches, quickly kills and dismembers a fruit fly that accidentally landed in their midst, Barro Colorado Island, Panama

Mark Moffett / Two army ant species fighting, larger (Eciton i) and the smaller (Eciton hamatum). The two colonies sparred for an hour in a chance meeting and retreated without fatalities, Barro Colorado Island, Pan...

Mark Moffett / Army Ant (Eciton hamatum) major worker or soldier, whose main job is defending the colony, biting human finger with sharp and powerful mandibles, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) major worker biting finger mandibles while stinging which turns the finger red. Also called a soldier, its primary job is defending the colony, Barro Colorado Island, Panama

Mark Moffett / Army Ant (Eciton hamatum) major worker biting finger mandibles while stinging which turns the finger red. Also called a soldier, its primary job is defending the colony, Barro Colorado Island, Panama