Alder Spittlebug vs Red-knotgrass

Aphrophora alni compared with Polygonum patulum

Key Differences

• Alder Spittlebug is Least Concern while Red-knotgrass is Not Evaluated.

Taxonomic Classification

Rank	Alder Spittlebug	Red-knotgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Hemiptera (Hemiptera)	Caryophyllales (Caryophyllales)
Family	Aphrophoridae	Polygonaceae
Genus	Aphrophora	Polygonum
Species	Aphrophora alni	Polygonum patulum

Conservation Status

Alder Spittlebug

LC — Least Concern

Red-knotgrass

NE — Not Evaluated

Physical Characteristics

Attribute	Alder Spittlebug	Red-knotgrass
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).

Red-knotgrass

Habitat

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

Range

Widely distributed across Europe (16 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Colombia).

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 5 countries:

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