Boloria improba

Photographer: Nils RyrholmRights holder: Nils Ryrholm

van Swaay C, Collins S, Dušej G, Maes D, Munguira M, Rakosy L, Ryrholm N, Šašić M, Settele J, Thomas J, Verovnik R, Verstrael T, Warren M, Wiemers M, Wynhoff I (2012) Dos and Don’ts for butterflies of the Habitats Directive of the European Union. Nature Conservation 1: 73-153. doi 10.3897/natureconservation.1.2786