Arctic barrel-bubble vs Azorean predacious diving beetle

Retusa obtusa compared with Agabus godmanni

Key Differences

• Arctic barrel-bubble is Least Concern while Azorean predacious diving beetle is Endangered.

Taxonomic Classification

Rank	Arctic barrel-bubble	Azorean predacious diving beetle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Gastropoda (Gastropoda)	Insecta (Insects)
Order	Cephalaspidea (Cephalaspidea)	Coleoptera (Beetles)
Family	Retusidae	Dytiscidae
Genus	Retusa	Agabus
Species	Retusa obtusa	Agabus godmanni

Evolutionary Relationship

Arctic barrel-bubble and Azorean predacious diving beetle share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arctic barrel-bubble

LC — Least Concern

Azorean predacious diving beetle

EN — Endangered

Physical Characteristics

Attribute	Arctic barrel-bubble	Azorean predacious diving beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic barrel-bubble

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Azorean predacious diving beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found in Portugal. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Arctic barrel-bubble

The Arctic barrel-bubble (Retusa obtusa) is a species in the genus Retusa. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Azorean predacious diving beetle

The Azorean predacious diving beetle (Agabus godmanni) is a species in the genus Agabus. It is currently classified as Endangered on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.