Alder leaf beetle vs Common maple aphid

Agelastica alni compared with Periphyllus testudinaceus

Key Differences

• Alder leaf beetle is Least Concern while Common maple aphid is Not Evaluated.

Taxonomic Classification

Rank	Alder leaf beetle	Common maple aphid
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Arthropoda (động vật Chân khớp)	Arthropoda (động vật Chân khớp)
Class same	Insecta (côn trùng)	Insecta (côn trùng)
Order	Coleoptera (Bọ cánh cứng)	Hemiptera (Bộ Cánh nửa)
Family	Chrysomelidae	Aphididae
Genus	Agelastica	Periphyllus
Species	Agelastica alni	Periphyllus testudinaceus

Evolutionary Relationship

Alder leaf beetle and Common maple aphid share a common ancestor at the Class level: Insecta. (côn trùng)

Conservation Status

Alder leaf beetle

LC — Least Concern

Common maple aphid

NE — Not Evaluated

Physical Characteristics

Attribute	Alder leaf beetle	Common maple aphid
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.

Common maple aphid

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, and 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.

Common maple aphid

<em>Periphyllus testudinaceus</em>, the common maple aphid, is a small sap-sucking insect in the family Aphididae, associated primarily with maple trees of the genus Acer. It is recorded from Denmark, Norway, Sweden, and the United States. This species has not been formally evaluated for IUCN conservation status. The common maple aphid typically forms colonies on the undersides of maple leaves and along young shoots, feeding on phloem sap and potentially causing leaf curling, discoloration, and reduced tree vigor in heavy infestations. Like many aphid species, it produces honeydew as a metabolic byproduct, which attracts ants that may protect the aphid colonies in exchange. The species exhibits complex life cycles that can involve both sexual and asexual reproduction across seasons. Biological traits including body size, average lifespan, and precise dietary specializations beyond maple sap feeding remain incompletely documented. The common maple aphid is part of the broader community of invertebrates dependent on maple trees across temperate Northern Hemisphere regions.

Shared Countries

Both species can be found in 4 countries:

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