Bug FAQFrigga Fritillary
Boloria frigga · Order: Lepidoptera · Family: Nymphalidae
Also called: Frigga's Fritillary, Willow-bog Fritillary
The Frigga fritillary has straight black markings on a pale reddish-yellow upper wing and a distinctive cinnamon-bordered underside of the forewing. It lives in willow and sphagnum bogs and tundra north of 60° N in Europe and also occurs across northern Asia and parts of North America.
Source: Wikipedia
How to recognize it
Upper wings are pale reddish-yellow with straight black marks that run parallel to the wing edge. Underside shows a broad cinnamon margin on the forewing and a less variegated hindwing with a paler distal edge.
Source: Wikipedia
Where it lives
Found in willow and sphagnum bogs. Occurs in tundra and bogs of northern Europe above 60° N.
Source: Wikipedia
What it eats
Larvae feed on cloudberry (Rubus chamaemorus), bog cranberry (Vaccinium oxycoccos) and sometimes on lingonberry (Vaccinium uliginosum). In experiments they will also eat alpine bistort (Polygonum viviparum) and blackberry (Rubus fruticosus).
Source: Wikipedia
Where it comes from
Also present in the Urals, Siberia, northern Mongolia and the Russian Far East.
Source: Wikipedia
Where it is found in the US
Recorded in 9 of 51 states and DC. Most records: Alaska, Wisconsin, Colorado, Michigan, Minnesota, Montana, Wyoming, Idaho.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
How can I identify a Frigga fritillary?
Look for pale reddish-yellow upper wings with straight black lines parallel to the edge and a cinnamon-bordered underside on the forewing.
Source: Wikipedia
Where does the Frigga fritillary live?
It inhabits willow and sphagnum bogs and tundra north of 60° N in Europe, as well as similar habitats across northern Asia and parts of North America.
Source: Wikipedia
What do the caterpillars eat?
They feed on cloudberry, bog cranberry and occasionally on lingonberry, and can also accept alpine bistort and blackberry in experiments.
Source: Wikipedia
How often does this butterfly reproduce?
It produces one generation every two years.
Source: Wikipedia
Same family (Nymphalidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Boloria_frigga
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.