Alder Spittlebug vs Pixie Foam

Aphrophora alni compared with Stereocaulon pileatum

Key Differences

• Alder Spittlebug is Least Concern while Pixie Foam is Critically Endangered.

Taxonomic Classification

Rank	Alder Spittlebug	Pixie Foam
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Ascomycota (Sac Fungi)
Class	Insecta (Insects)	Lecanoromycetes (Lecanoromycetes)
Order	Hemiptera (Hemiptera)	Lecanorales (Lecanorales)
Family	Aphrophoridae	Stereocaulaceae
Genus	Aphrophora	Stereocaulon
Species	Aphrophora alni	Stereocaulon pileatum

Conservation Status

Alder Spittlebug

LC — Least Concern

Pixie Foam

CR — Critically Endangered

Physical Characteristics

Attribute	Alder Spittlebug	Pixie Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder Spittlebug

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (5 countries) and North America (United States).

Pixie Foam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Alder Spittlebug

The Alder Spittlebug (Aphrophora alni) is a species in the genus Aphrophora. 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 4 countries:

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