Bad-smelling Alkanet vs Common maple aphid

Alkanna maleolens compared with Periphyllus testudinaceus

Key Differences

• Bad-smelling Alkanet is Critically Endangered while Common maple aphid is Not Evaluated.

Taxonomic Classification

Rank	Bad-smelling Alkanet	Common maple aphid
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Boraginales (Boraginales)	Hemiptera (Hemiptera)
Family	Boraginaceae	Aphididae
Genus	Alkanna	Periphyllus
Species	Alkanna maleolens	Periphyllus testudinaceus

Conservation Status

Bad-smelling Alkanet

CR — Critically Endangered

Common maple aphid

NE — Not Evaluated

Physical Characteristics

Attribute	Bad-smelling Alkanet	Common maple aphid
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bad-smelling Alkanet

Habitat

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

Common maple aphid

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Bad-smelling Alkanet

The Bad-smelling Alkanet (Alkanna maleolens) is a species in the genus Alkanna. It is currently classified as Critically Endangered 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.