Alder leaf beetle vs Big Finner

Agelastica alni compared with Balaenoptera physalus

Key Differences

• Alder leaf beetle is Least Concern while Big Finner is Endangered.

Taxonomic Classification

Rank	Alder leaf beetle	Big Finner
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Coleoptera (Beetles)	Cetacea (Whales & Dolphins)
Family	Chrysomelidae	Balaenopteridae (Rorquals)
Genus	Agelastica	Balaenoptera (Rorquals)
Species	Agelastica alni	Balaenoptera physalus

Evolutionary Relationship

Alder leaf beetle and Big Finner share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Alder leaf beetle

LC — Least Concern

Big Finner

EN — Endangered

Physical Characteristics

Attribute	Alder leaf beetle	Big Finner
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.

Big Finner

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). 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.

Big Finner

Big Finner (Balaenoptera physalus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden