Alder Spittlebug vs Bitter Scalewort

Aphrophora alni compared with Porella arboris-vitae

Key Differences

• Alder Spittlebug is Least Concern while Bitter Scalewort is Vulnerable.

Taxonomic Classification

Rank	Alder Spittlebug	Bitter Scalewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Marchantiophyta (liverwort)
Class	Insecta (Insects)	Jungermanniopsida (Jungermanniopsida)
Order	Hemiptera (Hemiptera)	Porellales (Porellales)
Family	Aphrophoridae	Porellaceae
Genus	Aphrophora	Porella
Species	Aphrophora alni	Porella arboris-vitae

Conservation Status

Alder Spittlebug

LC — Least Concern

Bitter Scalewort

VU — Vulnerable

Physical Characteristics

Attribute	Alder Spittlebug	Bitter Scalewort
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).

Bitter Scalewort

Habitat

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

Range

Found across Asia (Taiwan) and Europe (5 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Bitter Scalewort

The Bitter Scalewort (Porella arboris-vitae) is a species in the genus Porella. It is currently classified as Vulnerable on the IUCN Red List. Native to Asia and Europe, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇱🇺 Luxembourg 🇳🇴 Norway 🇸🇪 Sweden