Alder leaf beetle vs Narrowleaf knotweed

Agelastica alni compared with Polygonum bellardii

Key Differences

• Alder leaf beetle is Least Concern while Narrowleaf knotweed is Not Evaluated.

Taxonomic Classification

Rank	Alder leaf beetle	Narrowleaf knotweed
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 bellardii

Conservation Status

Alder leaf beetle

LC — Least Concern

Narrowleaf knotweed

NE — Not Evaluated

Physical Characteristics

Attribute	Alder leaf beetle	Narrowleaf knotweed
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.

Narrowleaf knotweed

Habitat

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

Range

Widely distributed across Europe (12 countries), North America (United States), and Oceania and the Pacific (Australia).

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 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States