Black-Veined White vs Thread Weed

Aporia crataegi compared with Ulva compressa

Key Differences

• Black-Veined White is Endangered while Thread Weed is Least Concern.

Taxonomic Classification

Rank	Black-Veined White	Thread Weed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Chlorophyta (Chlorophyta)
Class	Insecta (Insects)	Ulvophyceae (Ulvophyceae)
Order	Lepidoptera (Butterflies & Moths)	Ulvales (Ulvales)
Family	Pieridae	Ulvaceae
Genus	Aporia	Ulva
Species	Aporia crataegi	Ulva compressa

Conservation Status

Black-Veined White

EN — Endangered

Thread Weed

LC — Least Concern

Physical Characteristics

Attribute	Black-Veined White	Thread Weed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Thread Weed

Habitat

Native to Asia and Europe and Oceania, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), Oceania and the Pacific (New Zealand), and South America (Brazil).

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 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden