Influence of plant on distribution of an endangered butterfly, Leptalina unicolor (Bremer & Grey, 1853), in restored riverside areas along the Geum River

Background The dramatic worldwide decline in the butterfly species Leptalina unicolor (Bremer & Grey) is largely the result of continuous habitat decline and disturbance by humans. The discovery of a narrow habitat in riverside wetlands utilized by L. unicolor raises the hope that such restricted key areas could be rather easily protected.