Butterfly (IMAGE) University of Chicago Press Journals Caption These are different butterflies photographed in daylight (first and second rows) and through an ultraviolet filter (third row). Heliconius (left) are colorful in the ultraviolet while those of mimetic Eueides (right) are colorful only in visible light. New research suggests that the ability of Heliconius butterflies to detect ultraviolet color could help them identify their compatriots in a world of mimics. Credit Adriana Briscoe/UCI © Usage Restrictions None 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.