Alder leaf beetle vs Black-Widow

Agelastica alni compared with Geranium phaeum

Key Differences

• Alder leaf beetle is Least Concern while Black-Widow is Not Evaluated.

Taxonomic Classification

Rank	Alder leaf beetle	Black-Widow
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Coleoptera (Beetles)	Geraniales (Geraniales)
Family	Chrysomelidae	Geraniaceae
Genus	Agelastica	Geranium
Species	Agelastica alni	Geranium phaeum

Conservation Status

Alder leaf beetle

LC — Least Concern

Black-Widow

NE — Not Evaluated

Physical Characteristics

Attribute	Alder leaf beetle	Black-Widow
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.

Black-Widow

Habitat

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

Range

Found across Europe (11 countries) and North America (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.

Black-Widow

The Black-Widow (Geranium phaeum) is a species in the genus Geranium. Found across Europe (11 countries) and North America (United States).

Shared Countries

Both species can be found in 5 countries:

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