Erebia epiphron and Erebia orientalis: sibling butterfly species with contrasting histories

We thank the association ZERYTNHIA (http://www.asociacion-zerynthia.org/) for its support and the government of La Rioja for financing a specific study some years ago, as well as for the administrative authorization for the collection of samples. Financial support for this research was provided by Spanish Agencia Estatal de Investigacion and European Regional Development Fund, Grant Number CGL2016-76322-P (AEI/FEDER, UE) and by Spanish Ministerio de Economia, Industria y Competitividad, Agencia Estatal de Investigacion and European Social Fund thorugh predoctoral fellowship BES-2017–080641 (MINECO/AEI/FSE) to JCH.