Ray's Knotgrass vs small tortoiseshell

Polygonum oxyspermum compared with Aglais urticae

Key Differences

• Ray's Knotgrass is Endangered while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Ray's Knotgrass	small tortoiseshell
Kingdom	Plantae (植物)	Animalia (动物界)
Phylum	Magnoliophyta (木兰植物门)	Arthropoda (节肢动物门)
Class	Magnoliopsida (木兰纲)	Insecta (昆蟲綱)
Order	Caryophyllales (石竹目)	Lepidoptera (鱗翅目)
Family	Polygonaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Polygonum	Aglais
Species	Polygonum oxyspermum	Aglais urticae

Conservation Status

Ray's Knotgrass

EN — Endangered

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Ray's Knotgrass	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ray's Knotgrass

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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

小玳瑁蛱蝶(Aglais urticae)在IUCN红色名录中被列为近危(NT)物种。接近符合受威胁种标准，如无保护措施，种群可能变得脆弱。

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden