Red-knotgrass vs small tortoiseshell

Polygonum patulum compared with Aglais urticae

Key Differences

• Red-knotgrass is Not Evaluated while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Red-knotgrass	small tortoiseshell
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Caryophyllales (Caryophyllales)	Lepidoptera (Butterflies & Moths)
Family	Polygonaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Polygonum	Aglais
Species	Polygonum patulum	Aglais urticae

Conservation Status

Red-knotgrass

NE — Not Evaluated

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Red-knotgrass	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Red-knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Europe (16 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Colombia).

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 16 countries:

🇧🇾 Belarus 🇧🇪 Belgium 🇧🇬 Bulgaria 🇩🇰 Denmark 🇪🇪 Estonia 🇫🇷 France 🇮🇪 Ireland 🇱🇻 Latvia 🇱🇹 Lithuania 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇱 Poland 🇵🇹 Portugal 🇷🇺 Russia 🇸🇪 Sweden 🇬🇧 United Kingdom