Alder leaf beetle vs Welsh onion

Agelastica alni compared with Allium fistulosum

Key Differences

• Alder leaf beetle is Least Concern while Welsh onion is Critically Endangered.

Taxonomic Classification

Rank	Alder leaf beetle	Welsh onion
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Arthropoda (節足動物)	Magnoliophyta (被子植物門)
Class	Insecta (昆虫)	Liliopsida (単子葉植物綱)
Order	Coleoptera (コウチュウ目)	Asparagales (クサスギカズラ目)
Family	Chrysomelidae	Amaryllidaceae
Genus	Agelastica	Allium
Species	Agelastica alni	Allium fistulosum

Conservation Status

Alder leaf beetle

LC — Least Concern

Welsh onion

CR — Critically Endangered

Physical Characteristics

Attribute	Alder leaf beetle	Welsh onion
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.

Welsh onion

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, deserts and xeric shrublands, and tropical and subtropical dry broadleaf forests, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Algeria, Seychelles), Asia (Taiwan, Yemen), Europe (18 countries), North America (Canada, United States), Oceania and the Pacific (Tuvalu), and South America (Brazil, Colombia, Peru). Currently classified as Critically 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 5 countries:

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