Blackhead worm vs small tortoiseshell

Aporrectodea longa compared with Aglais urticae

Key Differences

• Blackhead worm is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Blackhead worm	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Annelida (Segmented Worms)	Arthropoda (Arthropods)
Class	Clitellata (Clitellata)	Insecta (Insects)
Order	Crassiclitellata (Crassiclitellata)	Lepidoptera (Butterflies & Moths)
Family	Lumbricidae	Nymphalidae (Brush-footed Butterflies)
Genus	Aporrectodea	Aglais
Species	Aporrectodea longa	Aglais urticae

Evolutionary Relationship

Blackhead worm and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Blackhead worm

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Blackhead worm	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blackhead worm

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Blackhead worm

The Blackhead worm (Aporrectodea longa) is a species in the genus Aporrectodea. Native to Europe and North America, inhabiting ecosystems characteristic of the region. Distributed across Belgium, Denmark, Norway, Sweden, and United States.

small tortoiseshell

small tortoiseshell (Aglais urticae) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden