Alder leaf beetle vs Onion Downy Mildew

Agelastica alni compared with Peronospora destructor

Key Differences

• Alder leaf beetle is Least Concern while Onion Downy Mildew is Not Evaluated.

Taxonomic Classification

Rank	Alder leaf beetle	Onion Downy Mildew
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Arthropoda (Arthropods)	Oomycota (Oomycetes)
Class	Insecta (Insects)	Peronosporea (Peronosporea)
Order	Coleoptera (Beetles)	Peronosporales (Peronosporales)
Family	Chrysomelidae	Peronosporaceae
Genus	Agelastica	Peronospora
Species	Agelastica alni	Peronospora destructor

Conservation Status

Alder leaf beetle

LC — Least Concern

Onion Downy Mildew

NE — Not Evaluated

Physical Characteristics

Attribute	Alder leaf beetle	Onion Downy Mildew
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.

Onion Downy Mildew

Habitat

Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Brazil).

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:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States