This subtropical Polyergus is a predominantly Mexican ant that attacks the southernmost Formica species. It was named by James Trager in honor of Howard Topoff, who extensively documented its behavior. Chiricahua mountains, Arizona, USA.
A young crab spider on American basket flower. Stengl Lost Pines Biological Station, Texas. USA.
Although the mimicry is not easily apparent when resting, the blister beetle Pleuropasta mirabilis when running forwards resembles a painfully-stinging red harvester ant dragging a seed backwards. Anza Borrego, California, USA.