Boloria improba explained

Boloria improba, the dingy fritillary, is a butterfly of the family Nymphalidae. In Europe it is only found in small parts of Scandinavia, more specifically the border region between Norway, Sweden and Finland.^[1] It is found in alpine or tundra habitats.^[2]

The larvae probably feed on Polygonum viviparum in Europe. In North America the food plants are Salix arctica and Salix reticulata nivalis.

Subspecies

The following subspecies are recognized:

• B. i. acrocnema in the San Juan Mountains in southwestern Colorado
• B. i. harryi in the Wind River Mountains in southwestern Wyoming
• B. i. improba in Alaska and northwestern Canada. The Siberian variant which is more yellow are considered the same subspecies, they are called form youngi.
• B. i. improbula northern Scandinavia

External links

• Butterflies and Moths of North America
• Butterflies of Canada
• Butterflies of Norway
• Butterflies of Europe

Notes and References

1. [Adalbert Seitz|Seitz. A.]
2. Web site: NatureServe Explorer 2.0 . 2022-03-12 . explorer.natureserve.org.