He studies the phenotypic plasticity of the wing pattern elements in the cabbage white butterfly. In his free time, he enjoys photography, hiking, bird watching, fly fishing and spending time with his wife and kids. Roger Vila, Ph.D. is CSIC Scientist at the Institute of Evolutionary Biology (CSIC-UPF) in Barcelona, Spain, where he leads the Butterfly Diversity and Evolution Lab. He is interested in understanding how the amazing butterfly biodiversity has been generated. He has been a passionate lepidopterist since childhood, and in his "other free time" he enjoys spending it with his family, traveling, hiking... and sometimes doing nothing!