Alder vs Common maple aphid

Alnus glutinosa compared with Periphyllus testudinaceus

Key Differences

Alder is Least Concern while Common maple aphid is Not Evaluated.

Taxonomic Classification

Rank	Alder	Common maple aphid
Kingdom	Plantae (نباتات)	Animalia (حيوانات)
Phylum	Magnoliophyta (كاسيات البذور)	Arthropoda (مفصليات الأرجل)
Class	Magnoliopsida (ماغنولانية)	Insecta (حشرات)
Order	Fagales (بلوطيات)	Hemiptera (نصفيات الأجنحة)
Family	Betulaceae	Aphididae
Genus	Alnus	Periphyllus
Species	Alnus glutinosa	Periphyllus testudinaceus

Conservation Status

Alder

LC — Least Concern

Common maple aphid

NE — Not Evaluated

Physical Characteristics

Attribute	Alder	Common maple aphid
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (South Africa), Asia (India, Japan), Europe (6 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (Chile).

Common maple aphid

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, and United States.

Alder

The Alder (Alnus glutinosa) is a species in the genus Alnus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.