Boloria aquilonaris (Stichel, 1908)

Host plants:
The larvae feed on Ericaceae, particularly Oxycoccus palustris, but also on Andromeda.

Habitat:
Boloria aquilonaris inhabits bogs and moors with the occurrence of larval host plants. The butterflies are found in neighboring fen meadows in the search for nectar plants.

Life cycle:
Boloria aquilonaris flies between mid-June and July. The caterpillar overwinters in the first instar and lives at open places where the host plant grows on turf mosses.

Endangerment factors:
Boloria aquilonaris is strongly endangered by bog destruction (drainage, eutrophication, afforestation, grazing, bush encroachment after disturbance of the water balance, peat industry, etc.). The flower-rich fen meadows in the vicinity of the larval habitats are an indispensable part of the overall habitat, too.

Remarks:
Boloria aquilonaris is distributed from central and northern Europe to east Asia. In central Europe it is highly local on bogs.