Alder leaf beetle vs Medusa Brittlestem

Agelastica alni compared with Psathyrella caput-medusae

Key Differences

• Alder leaf beetle is Least Concern while Medusa Brittlestem is Endangered.

Taxonomic Classification

Rank	Alder leaf beetle	Medusa Brittlestem
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Basidiomycota (Club Fungi)
Class	Insecta (Insects)	Agaricomycetes (Mushrooms)
Order	Coleoptera (Beetles)	Agaricales (Gilled Mushrooms)
Family	Chrysomelidae	Psathyrellaceae
Genus	Agelastica	Psathyrella
Species	Agelastica alni	Psathyrella caput-medusae

Conservation Status

Alder leaf beetle

LC — Least Concern

Medusa Brittlestem

EN — Endangered

Physical Characteristics

Attribute	Alder leaf beetle	Medusa Brittlestem
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.

Medusa Brittlestem

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Denmark, Norway, and Sweden. 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.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden