Frigga's Fritillary
Boloria frigga
Boloria frigga, the Frigga fritillary, is a butterfly of the family Nymphalidae with a circumboreal distribution. It occurs in bogs and tundra in Northern Europe to the north of 60° N, very locally in more southern locations, as well as in the Urals, Siberia, Northern Mongolia, the Russian Far East, western parts of the United States and Canada.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Boloria_frigga
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Lepidoptera
Family
Nymphalidae
Genus
Boloria
Frigga's Fritillary belongs to the family Nymphalidae, order Lepidoptera, within the Insecta class.
Species Profile
Boloria frigga, the Frigga fritillary, is a butterfly of the family Nymphalidae with a circumboreal distribution. It occurs in bogs and tundra in Northern Europe to the north of 60° N, very locally in more southern locations, as well as in the Urals, Siberia, Northern Mongolia, the Russian Far East, western parts of the United States and Canada.
Frigga's Fritillary faces severe population declines primarily due to habitat loss and fragmentation of its specialized bog and wetland ecosystems. Climate change poses an additional threat by altering the hydrology and plant communities of these sensitive habitats, while the species' limited dispersal ability makes it particularly vulnerable to local extinctions.
Key Facts
Threats
IUCN Red List: Critically Endangered
Frigga's Fritillary faces severe population declines primarily due to habitat loss and fragmentation of its specialized bog and wetland ecosystems. Climate change poses an additional threat by altering the hydrology and plant communities of these sensitive habitats, while the species' limited dispersal ability makes it particularly vulnerable to local extinctions.
Climate change impacts on bog hydrology
Habitat loss and fragmentation of bog ecosystems
Wetland drainage and conversion
Changes in host plant availability
Limited dispersal ability reducing recolonization
National vs Global Threat Status
How this species is assessed at the national level compared to its IUCN global status (CR).
| Country | National Status | Global Status | Comparison |
|---|---|---|---|
| EU | LCLeast Concern | CRCritically Endangered | Lower local risk |
| EU | LCLeast Concern | CRCritically Endangered | Lower local risk |
National Red List data sourced from the National Red List Project (nationalredlist.org, ZSL) and country-specific Red List authorities.
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
National Red Lists: ZSL (2025). National Red List. Zoological Society of London. Available at: https://www.nationalredlist.org
This page: SpeciesRadar (2025). Frigga's Fritillary (Boloria frigga). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/friggas-fritillary