Alder Spittlebug vs Black Knot

Aphrophora alni compared with Apiosporina morbosa

Key Differences

• Alder Spittlebug is Least Concern while Black Knot is Not Evaluated.

Taxonomic Classification

Rank	Alder Spittlebug	Black Knot
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Ascomycota (Sac Fungi)
Class	Insecta (Insects)	Dothideomycetes (Dothideomycetes)
Order	Hemiptera (Hemiptera)	Venturiales (Venturiales)
Family	Aphrophoridae	Venturiaceae
Genus	Aphrophora	Apiosporina
Species	Aphrophora alni	Apiosporina morbosa

Conservation Status

Alder Spittlebug

LC — Least Concern

Black Knot

NE — Not Evaluated

Physical Characteristics

Attribute	Alder Spittlebug	Black Knot
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).

Black Knot

Habitat

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

Range

Distributed across Denmark, Norway, and United States.

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.

Black Knot

The Black Knot (Apiosporina morbosa) is a species in the genus Apiosporina. Native to Europe and North America, inhabiting ecosystems characteristic of the region. Its geographic range spans Distributed across Denmark, Norway, and United States.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇺🇸 United States