ACKNOWLEDGEMENTS
We are very grateful to Adolfo Cordero Rivera, who kindly allowed us to use his laboratory and material for the rearing experiments, and to Zalandrana Odonatology group who kindly help us with samplings and permissions in north-central Spain. We thank the following colleagues for kindly helping with collecting/sending samples: Adolfo Cordero Rivera, Iñaki Mezquita, Mario García-París, Bernat Garriós, Pere Luque, Xoaquín Baixeras, Francisco Cano, Jean Pierre Boudot, Jürgen Ott, Cedrick Vanappelghem, Philippe Lambret, and Phill Watts. We are grateful to Janet Nolasco Soto and Emmanuel Villafán de la Torre for technical support. Sequencing was performed by BGI (Hongkong) and the SNP&SEQ Technology Platform in Uppsala, which is part of the National Genomics Infrastructure (NGI) Sweden and Science for Life Laboratory, supported by the Swedish Research Council and the Knut and Alice Wallenberg Foundation. Bioinformatics analyses were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at Uppsala Multidisciplinary Center for Advanced Computational Science (UPPMAX) and the Huitzilin 2.0 HPC system at the Instituto de Ecología A.C (INECOL). The research was funded by the Karl-Tryggers Foundation (to RAS-G and MW), the Kungl. Vetenskapsakademien (BS2015-0001 to RAS-G), the Royal Physiological Society in Lund (the Nilsson-Ehle Foundation, 36118 to RAS-G, and 37369 to MW), the Swedish Research Council (621-2016-689 to BH) the Marie Curie Intraeuropean Fellowship (to JS, RAS-G, MW and BH), and from Mexican CONACYT (282922 to RAS-G).