Brown Diving Beetle vs Scaly Stalkball

Agabus brunneus compared with Tulostoma melanocyclum

Key Differences

• Brown Diving Beetle is Extinct while Scaly Stalkball is Critically Endangered.

Taxonomic Classification

Rank	Brown Diving Beetle	Scaly Stalkball
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Basidiomycota (Club Fungi)
Class	Insecta (Insects)	Agaricomycetes (Mushrooms)
Order	Coleoptera (Beetles)	Agaricales (Gilled Mushrooms)
Family	Dytiscidae	Agaricaceae (Agarics)
Genus	Agabus	Tulostoma
Species	Agabus brunneus	Tulostoma melanocyclum

Conservation Status

Brown Diving Beetle

EX — Extinct

Scaly Stalkball

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Diving Beetle	Scaly Stalkball
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden.

Scaly Stalkball

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brown Diving Beetle

The Brown Diving Beetle (Agabus brunneus) is a species in the genus Agabus. It is currently classified as Extinct on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden