Alder Spittlebug vs Knopper Gall

Aphrophora alni compared with Andricus quercuscalicis

Key Differences

• Alder Spittlebug is Least Concern while Knopper Gall is Not Evaluated.

Taxonomic Classification

Rank	Alder Spittlebug	Knopper Gall
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order	Hemiptera (Hemiptera)	Hymenoptera (Ants, Bees & Wasps)
Family	Aphrophoridae	Cynipidae
Genus	Aphrophora	Andricus
Species	Aphrophora alni	Andricus quercuscalicis

Evolutionary Relationship

Alder Spittlebug and Knopper Gall share a common ancestor at the Class level: Insecta. (Insects)

Conservation Status

Alder Spittlebug

LC — Least Concern

Knopper Gall

NE — Not Evaluated

Physical Characteristics

Attribute	Alder Spittlebug	Knopper Gall
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).

Knopper Gall

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (7 countries).

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 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden