Alder leaf beetle vs Ray's Knotgrass

Agelastica alni compared with Polygonum oxyspermum

Key Differences

• Alder leaf beetle is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Alder leaf beetle	Ray's Knotgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Coleoptera (Beetles)	Caryophyllales (Caryophyllales)
Family	Chrysomelidae	Polygonaceae
Genus	Agelastica	Polygonum
Species	Agelastica alni	Polygonum oxyspermum

Conservation Status

Alder leaf beetle

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Alder leaf beetle	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder leaf beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

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.

Alder leaf beetle

The Alder leaf beetle (Agelastica alni) is a species in the genus Agelastica. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden