About the Authors
Department of Genetics & Evolution, Max Planck Institute for Chemical Ecology, Jena, Germany
Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
Department of Biology, Duke University, Durham, North Carolina, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JK HV MP. Performed the experiments: MP. Analyzed the data: JK MP. Contributed reagents/materials/analysis tools: TM. Wrote the paper: JK MP.