Alder Spittlebug vs Caterpillar-hunter

Aphrophora alni compared with Calosoma inquisitor

Key Differences

• Alder Spittlebug is Least Concern while Caterpillar-hunter is Near Threatened.

Taxonomic Classification

Rank	Alder Spittlebug	Caterpillar-hunter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class same	Insecta (Insects)	Insecta (Insects)
Order	Hemiptera (Hemiptera)	Coleoptera (Beetles)
Family	Aphrophoridae	Carabidae
Genus	Aphrophora	Calosoma
Species	Aphrophora alni	Calosoma inquisitor

Evolutionary Relationship

Alder Spittlebug and Caterpillar-hunter share a common ancestor at the Class level: Insecta. (Insects)

Conservation Status

Alder Spittlebug

LC — Least Concern

Caterpillar-hunter

NT — Near Threatened

Physical Characteristics

Attribute	Alder Spittlebug	Caterpillar-hunter
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).

Caterpillar-hunter

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Caterpillar-hunter

The Caterpillar-hunter (Calosoma inquisitor) is a species in the genus Calosoma. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden