The Emmet, also called the ant and the pismire, is an heraldic charge in European heraldry, particularly in British and German heraldry.
Emmet (heraldry) Wikipedia
The emmet is understood as a symbol of hard work and of wisdom. In his A Display of Heraldrie (1610), John Guillim of the English College of Arms says:
"By the Emmet or Pismire may be signified a Man of great Labour, Wisdom, and Providence in all his Affairs, and of a pregnant and ready Memory."Massy: argent a bend azure between three emmets sable