Resistance is futile: Speaking of Argentina, a species of Argentine ants that were introduced into Europe 80 years ago have grown into a single "super-colony" over 3700 miles long, consisting of billions of ants in millions of nests. These ants have taken over large parts of coastal Portugal, Spain, France, and Italy from the various species of native European ants. The only potentially threatening rival is a second supercolony of Argentine ants based in the Catalan region of Spain.