Acknowledgements
This work was supported by Carl Tryggers Stiftelse för Vetenskaplig
Forskning, Formas (project 2011-1370) and the Linnaeus environment
“Insect Chemical Ecology, Ethology, and Evolution (IC-E3)” (Formas,
SLU). The authors acknowledge support from Science for Life Laboratory,
the National Genomics Infrastructure (NGI), and Uppmax for providing
assistance in massive parallel sequencing and computational
infrastructure. Two reviewers provided constructive and valiable
comments.