False heath fritillary distribution in Finland and the landscape maps of the study areas. The currently known distribution of the false heath fritillary in Finland is shown by the black dots in the main map. The landscape maps show the reference study areas REF1 (located in Siitama; A) and REF2 (Sorila; B) and the RIPARIAN study area (Merikarvia; C) on the same scale. We classified the landscapes into low-quality matrix (dark grey), high-quality matrix (light grey), breeding habitat (white) and the Merikarvia River (black). Lines in the low-and high-quality matrices depict boundaries of search areas.