Boloria frigga

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NameFrigga Fritillary SeasonalitySingle-brooded, flying mostly between late May and mid July depending on elevation. IdentificationThe Frigga Fritillary has extensive dark shading in the inner half of the hindwing upperside, much more so than B. bellona and epithore, which are most similar. The hindwing underside also has a greater contrast between the basal and median area, the outher half being light pinkish-brown. The pale silvery patch along the leading hindwing edge is also brighter than in epithore and bellona. Larger and more distinctly-marked than B. improba, which occurs only in alpine tundra. Subspecies saga occurs in Alberta.

Scientific Name Boloria frigga Common Name Frigga Fritillary Habitat Willow fens and sphagnum bogs, moist alpine tundra. Seasonality Single-brooded, flying mostly between late May and mid July depending on elevation. Identification

The Frigga Fritillary has extensive dark shading in the inner half of the hindwing upperside, much more so than B. bellona and epithore, which are most similar. The hindwing underside also has a greater contrast between the basal and median area, the outher half being light pinkish-brown. The pale silvery patch along the leading hindwing edge is also brighter than in epithore and bellona. Larger and more distinctly-marked than B. improba, which occurs only in alpine tundra. Subspecies saga occurs in Alberta.

Life History

The immature stages of North American populations have not been described in detail. The eggs are laid on the host shrubs and hatch in 9 to 11 days (Bird et al. 1995). Larvae feed on the leaf undersides in early…

Conservation Not of concern. Diet Info Larvae feed on willow (Salix sp.) and dwarf birch (Betula glandulosa) in Alberta (Bird et al. 1995). Adult males occasionally visit flowers (Klassen et al. 1989). Range Alaska east to Labrador, south to southern BC, Alberta, and the northwestern Great Lakes region. Disjunct populations occur in the southern Rockies. Also ranges across northern Eurasia (Scott 1986).

Page Citation

"Species Details - Boloria frigga, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2798. Accessed 14 Apr. 2025.

References

42 results plotted on map in 14 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM21844 - Boloria frigga

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1919-06-05

UASM21845 - Boloria frigga

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByCrosby, G. C. S. Date Collected1922-06-10

UASM21846 - Boloria frigga

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByCrosby, G. C. S. Date Collected1923-06-27

UASM21847 - Boloria frigga

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Fort Vermilion Collected ByBedford, R. H. Date Collected1927-06

UASM21848 - Boloria frigga

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Date Collected1906-05-20

UASM21849 - Boloria frigga

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Date Collected1906-05-30

UASM21850 - Boloria frigga