arctic threadwort vs Black-Veined White

Cephaloziella varians compared with Aporia crataegi

Key Differences

• arctic threadwort is Least Concern while Black-Veined White is Endangered.

Taxonomic Classification

Rank	arctic threadwort	Black-Veined White
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Marchantiophyta (liverwort)	Arthropoda (Arthropods)
Class	Jungermanniopsida (Jungermanniopsida)	Insecta (Insects)
Order	Jungermanniales (Jungermanniales)	Lepidoptera (Butterflies & Moths)
Family	Cephaloziellaceae	Pieridae
Genus	Cephaloziella	Aporia
Species	Cephaloziella varians	Aporia crataegi

Conservation Status

arctic threadwort

LC — Least Concern

Black-Veined White

EN — Endangered

Physical Characteristics

Attribute	arctic threadwort	Black-Veined White
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

arctic threadwort

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Sweden, and United States.

Black-Veined White

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 9 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Asia (Cyprus) and Europe (39 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

arctic threadwort

The Arctic threadwort (Cephaloziella varians) is a species in the genus Cephaloziella. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Black-Veined White

Black-Veined White (Aporia crataegi) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden