Erlenschaumzikade vs Ray's Knotgrass

Aphrophora alni compared with Polygonum oxyspermum

Key Differences

• Erlenschaumzikade is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Erlenschaumzikade	Ray's Knotgrass
Kingdom	Animalia (Tier)	Plantae (Pflanzen)
Phylum	Arthropoda (Gliederfüßer)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insekten)	Magnoliopsida (Dicots)
Order	Hemiptera (Schnabelkerfe)	Caryophyllales (Nelkenartige)
Family	Aphrophoridae	Polygonaceae
Genus	Aphrophora	Polygonum
Species	Aphrophora alni	Polygonum oxyspermum

Conservation Status

Erlenschaumzikade

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Erlenschaumzikade	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Erlenschaumzikade

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Ray's Knotgrass

Habitat

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

Range

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

Erlenschaumzikade

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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden