Alder leaf beetle vs treble brown spot

Agelastica alni compared with Idaea trigeminata

Key Differences

• Alder leaf beetle is Least Concern while treble brown spot is Near Threatened.

Taxonomic Classification

Rank	Alder leaf beetle	treble brown spot
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order	Coleoptera (Beetles)	Lepidoptera (Butterflies & Moths)
Family	Chrysomelidae	Geometridae
Genus	Agelastica	Idaea
Species	Agelastica alni	Idaea trigeminata

Evolutionary Relationship

Alder leaf beetle and treble brown spot share a common ancestor at the Class level: Insecta. (Insects)

Conservation Status

Alder leaf beetle

LC — Least Concern

treble brown spot

NT — Near Threatened

Physical Characteristics

Attribute	Alder leaf beetle	treble brown spot
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.

treble brown spot

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden