Northern Rock Crawler vs Freija Fritillary
Side-by-side species comparison
| Attribute | Northern Rock Crawler | Freija Fritillary |
|---|---|---|
| Scientific Name | Grylloblatta campodeiformis | Boloria freija |
| Order | Grylloblattodea | Lepidoptera |
| Family | Grylloblattidae | Nymphalidae |
| Size | 15-30 mm | 30-40 mm wingspan |
| Habitat | Indoors | Tundra & Arctic |
| Diet | Omnivores | Omnivores |
| Regions | North America | Alaska, northern Canada, Scandinavia, Finland, northern Russia, Siberia |
| Conservation | Near Threatened | Least Concern |
Northern Rock Crawler
A rare ice-dwelling insect that lives on glaciers and snowfields at near-freezing temperatures. Handling one with bare hands can overheat and kill it.
Did You Know?
Rock crawlers are so cold-adapted that a human hand is hot enough to kill them — they prefer temperatures between 1-4C and die above 20C.
Freija Fritillary
A medium-small fritillary with bright orange wings bearing black zigzag markings. The hindwing underside features a distinctive arrowhead pattern in white and brown. It has a rapid, low flight over tundra bogs.
Did You Know?
Named after the Norse goddess Freya, this butterfly is among the first to fly each spring in the boreal north.