Aspen Roller vs Ray's Knotgrass

Ancylis laetana compared with Polygonum oxyspermum

Key Differences

• Aspen Roller is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Aspen Roller	Ray's Knotgrass
Kingdom	Animalia (动物界)	Plantae (植物)
Phylum	Arthropoda (节肢动物门)	Magnoliophyta (木兰植物门)
Class	Insecta (昆蟲綱)	Magnoliopsida (木兰纲)
Order	Lepidoptera (鱗翅目)	Caryophyllales (石竹目)
Family	Tortricidae	Polygonaceae
Genus	Ancylis	Polygonum
Species	Ancylis laetana	Polygonum oxyspermum

Conservation Status

Aspen Roller

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Aspen Roller	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aspen Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

Aspen Roller

The Aspen Roller (Ancylis laetana) is a species in the genus Ancylis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats. Distributed across Belgium, Denmark, Norway, and Sweden.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden