Louse vs small tortoiseshell

Polyplax serrata compared with Aglais urticae

Key Differences

• Louse is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Louse	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order	Psocodea (Psocodea)	Lepidoptera (Butterflies & Moths)
Family	Polyplacidae	Nymphalidae (Brush-footed Butterflies)
Genus	Polyplax	Aglais
Species	Polyplax serrata	Aglais urticae

Evolutionary Relationship

Louse and small tortoiseshell share a common ancestor at the Class level: Insecta. (Insects)

Conservation Status

Louse

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Louse	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Louse

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across 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.

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 2 countries:

🇳🇴 Norway 🇸🇪 Sweden