Brown Diving Beetle vs limestone fern

Agabus brunneus compared with Gymnocarpium robertianum

Key Differences

• Brown Diving Beetle is Extinct while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	Brown Diving Beetle	limestone fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Tracheophyta
Class	Insecta (Insects)	Polypodiopsida (Polypodiopsida)
Order	Coleoptera (Beetles)	Polypodiales (Polypodiales)
Family	Dytiscidae	Cystopteridaceae
Genus	Agabus	Gymnocarpium
Species	Agabus brunneus	Gymnocarpium robertianum

Conservation Status

Brown Diving Beetle

EX — Extinct

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	Brown Diving Beetle	limestone fern
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.

limestone fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Belgium, Canada, 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