<i>Phengaris arion<i> (IMAGE) Pensoft Publishers Caption This is a photo of an endangered Natura 2000 butterfly, Phengaris arion (listed in the Habitats Directive as Maculinea arion). Credit Chris van Swaay Usage Restrictions Creative Commons Attribution License (CC-BY) 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.