Fire Ant Lizard Map (IMAGE) Penn State Caption Invasive fire ants arrived in Alabama in the 1930s and have spread across the southeastern United States. A team of researchers from Penn State determined that the presence of fire ants has reversed graphical trends in behavioral and physical traits of eastern fence lizards (Sceloporus undulatus). Credit Langkilde Lab, Penn State Usage Restrictions Credit must be provided alongside image. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.