Mountain Hemlock vs small tortoiseshell

Tsuga mertensiana compared with Aglais urticae

Key Differences

• Mountain Hemlock is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Mountain Hemlock	small tortoiseshell
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Coniferophyta (Conifers)	Arthropoda (Arthropods)
Class	Pinopsida (Conifers)	Insecta (Insects)
Order	Pinales (Pines & Allies)	Lepidoptera (Butterflies & Moths)
Family	Pinaceae (Pine Family)	Nymphalidae (Brush-footed Butterflies)
Genus	Tsuga	Aglais
Species	Tsuga mertensiana	Aglais urticae

Conservation Status

Mountain Hemlock

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Mountain Hemlock	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Mountain Hemlock

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Range

Distributed across Canada, Denmark, Iceland, Norway, and Sweden.

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 4 countries:

🇩🇰 Denmark 🇮🇸 Iceland 🇳🇴 Norway 🇸🇪 Sweden