<I>Heliconius spp.</I> (IMAGE) Smithsonian Tropical Research Institute Caption Heliconius butterflies were reared in butterfly houses at the Smithsonian Tropical Research Institute's facilities in Gamboa, Panama. Credit STRI Usage Restrictions Credit: STRI 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.