Alder leaf beetle vs Bighead knapweed

Agelastica alni compared with Centaurea macrocephala

Key Differences

• Alder leaf beetle is Least Concern while Bighead knapweed is Not Evaluated.

Taxonomic Classification

Rank	Alder leaf beetle	Bighead knapweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Coleoptera (Beetles)	Asterales (Daisies & Sunflowers)
Family	Chrysomelidae	Asteraceae (Daisy Family)
Genus	Agelastica	Centaurea
Species	Agelastica alni	Centaurea macrocephala

Conservation Status

Alder leaf beetle

LC — Least Concern

Bighead knapweed

NE — Not Evaluated

Physical Characteristics

Attribute	Alder leaf beetle	Bighead knapweed
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.

Bighead knapweed

Habitat

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

Range

Found across Europe (6 countries) and North America (Canada, United States).

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.

Bighead knapweed

The Bighead knapweed (Centaurea macrocephala) is a species in the genus Centaurea. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Shared Countries

Both species can be found in 5 countries:

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