sea thread hydroid vs small tortoiseshell

Obelia dichotoma compared with Aglais urticae

Key Differences

• sea thread hydroid is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	sea thread hydroid	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Cnidaria (Cnidarians)	Arthropoda (Arthropods)
Class	Hydrozoa (Hydrozoa)	Insecta (Insects)
Order	Leptothecata (Leptothecata)	Lepidoptera (Butterflies & Moths)
Family	Campanulariidae	Nymphalidae (Brush-footed Butterflies)
Genus	Obelia	Aglais
Species	Obelia dichotoma	Aglais urticae

Evolutionary Relationship

sea thread hydroid and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

sea thread hydroid

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	sea thread hydroid	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

sea thread hydroid

Habitat

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

Range

Widely distributed across Africa (South Africa), Europe (5 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Argentina, Chile).

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.

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 5 countries:

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