The Federal Imported Fire Ant Quarantine 81 was invoked to prevent the artificial spread of imported fire ants -red imported fire ants (Solenopsis invicta), black imported fire ants (Solenopsis richteri) and their hybrids. This quarantine covers the entire state. Approximately 125 nurseries are under compliance agreements for the quarantine. These agreements allow nurseries to ship nursery stock out-of-state to non-regulated areas.