Glasswing Butterfly at Flower (IMAGE) Marine Biological Laboratory Caption A glasswing butterfly feeding at flowers in Costa Rica. The remarkable transparency of these butterflies allows them to be "invisible", and the antiglare coating of their wings helps to prevent them from being given away by any glare of sunlight off their wings. Credit Nipam Patel Usage Restrictions Please use with credit 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.