Alder Spittlebug vs Shelled Slug

Aphrophora alni compared with Testacella haliotidea

Key Differences

• Alder Spittlebug is Least Concern while Shelled Slug is Data Deficient.

Taxonomic Classification

Rank	Alder Spittlebug	Shelled Slug
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Gastropoda (Gastropoda)
Order	Hemiptera (Hemiptera)	Stylommatophora (Stylommatophora)
Family	Aphrophoridae	Testacellidae
Genus	Aphrophora	Testacella
Species	Aphrophora alni	Testacella haliotidea

Evolutionary Relationship

Alder Spittlebug and Shelled Slug share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Alder Spittlebug

LC — Least Concern

Shelled Slug

DD — Data Deficient

Physical Characteristics

Attribute	Alder Spittlebug	Shelled Slug
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).

Shelled Slug

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Widely distributed across Europe (9 countries), North America (United States), and Oceania and the Pacific (New Zealand).

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 🇸🇪 Sweden 🇺🇸 United States