Brown Diving Beetle vs Threeleaf Halberd Fern

Agabus brunneus compared with Tectaria trifoliata

Key Differences

• Brown Diving Beetle is Extinct while Threeleaf Halberd Fern is Near Threatened.

Taxonomic Classification

Rank	Brown Diving Beetle	Threeleaf Halberd Fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Tracheophyta
Class	Insecta (Insects)	Polypodiopsida (Polypodiopsida)
Order	Coleoptera (Beetles)	Polypodiales (Polypodiales)
Family	Dytiscidae	Tectariaceae
Genus	Agabus	Tectaria
Species	Agabus brunneus	Tectaria trifoliata

Conservation Status

Brown Diving Beetle

EX — Extinct

Threeleaf Halberd Fern

NT — Near Threatened

Physical Characteristics

Attribute	Brown Diving Beetle	Threeleaf Halberd 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.

Threeleaf Halberd Fern

Habitat

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

Range

Distributed across Brazil, Colombia, and Cuba. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.