For species protection reasons, finding places of butterflies on maps are accidentally moved by a maximum of 1 kilometers. Holly BlueCelastrina argiolus (Linnaeus, 1758)Holly Blue Holly Blue (Celastrina argiolus) in Bonn-Oberkassel [Male] Photograph: Ingo DanielsIngo Daniels; Bonn, GermanyBonn, GermanyGermany (10. June 2018, 11:52 AM) Larger map with photo location (OpenStreetMap)