Competing interests
The authors declare that they have no competing interests.
Acknowledgments
The authors thank L. Ericson for collecting beetle samples from the field and M. de la Paz Celorio Mancera for helpful guide in DNA extraction. This work was supported by grant VR-2015-4232 (to PAH) from the Swedish Research Council Vetenskapsrådet, and by the National Genomics Infrastructure (NGI) and Uppmax through the Science for Life Laboratory, which is funded by the Knut and Alice Wallenberg Foundation, and the Swedish Research Council Vetenskapsrådet. Science for Life Laboratory are also acknowledged for bioinformatics support through the PhD advisory program. Computational analyses were performed on resources provided by SNIC through Uppsala Multidisciplinary Centre for Advanced Computational Science (UPPMAX) under project b2013018. SNIC is partially funded by the Swedish Research Council through grant agreement no. 2018-05973.