Erlenblattkäfer vs Flussseeschwalbe

Agelastica alni compared with Sterna hirundo

Key Differences

• Erlenblattkäfer is Least Concern while Flussseeschwalbe is Endangered.

Taxonomic Classification

Rank	Erlenblattkäfer	Flussseeschwalbe
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Arthropoda (Gliederfüßer)	Chordata (Chordatiere)
Class	Insecta (Insekten)	Aves (Vögel)
Order	Coleoptera (Käfer)	Charadriiformes (Regenpfeiferartige)
Family	Chrysomelidae	Laridae
Genus	Agelastica	Sterna
Species	Agelastica alni	Sterna hirundo

Evolutionary Relationship

Erlenblattkäfer and Flussseeschwalbe share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Erlenblattkäfer

LC — Least Concern

Flussseeschwalbe

EN — Endangered

Physical Characteristics

Attribute	Erlenblattkäfer	Flussseeschwalbe
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Erlenblattkäfer

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Flussseeschwalbe

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Erlenblattkäfer

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.

Flussseeschwalbe

Common Tern (Sterna hirundo) 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 5 countries:

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