Appalachian Tiger Swallowtail (image) University of Texas at Austin Caption Kunte et. al. recently discovered that the Appalachian tiger swallowtail butterfly evolved through the hybridization of Eastern and Canadian swallowtails. It is a rare example of hybrid speciation in an animal. Pictured here is a female Appalachian tiger swallowtail. Credit Krushnamegh Kunte Usage Restrictions None 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.