| Family | Nymphalidae |
|---|---|
| Subfamily | Heliconiinae |
| Genus | Boloria |
| Species | eunomia |
| Authority | (Esper, 1800) |
| English Name | Bog Fritillary |
| European Red List 2010 | Least Concern (LC) |
|---|---|
| EU 27 Red List 2010 | Least Concern (LC) |
| European Red List 2025 | Least Concern (LC) |
| EU 27 Red List 2025 | Least Concern (LC) |
| Habitats Directive | |
| Bern Convention | |
| CITES |
The Bog Fritillary occurs on wet grasslands and marshy ground by streams, rivers, or lakes, and at the edges of raised bogs. Sometimes, the area they occupy is very small. They can be seen beside streams, flying slowly back and forth between small patches where its foodplant Common Bistort (Polygonum bistorta) is growing. The small caterpillars live together in a loosely spun nest, and hibernate when half-grown. However, the larger, later caterpillars are solitary and considerably more mobile, frequently leaving their foodplants in order to bask in the sun on another plant. The Bog Fritillary has one generation a year. There are two subspecies in Europe. The species’ range in central Europe is highly fragmented.
Andorra / Austria / Belarus / Belgium / Belgium: Wallonia / Bulgaria / Czechia / Estonia / Finland / France / France: Mainland / Germany / Italy (Possibly Present) / Italy: Mainland (Possibly Present) / Latvia / Lithuania / Luxembourg / Norway / Poland / Romania / European Russia / Serbia / Serbia: Serbia / Slovakia (Regionally Extinct) / Spain / Spain: Mainland / Sweden / Ukraine /