Brown Diving Beetle vs Ray's Knotgrass

Agabus brunneus compared with Polygonum oxyspermum

Key Differences

• Brown Diving Beetle is Extinct while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Brown Diving Beetle	Ray's Knotgrass
Kingdom	Animalia (hayvan)	Plantae (bitki)
Phylum	Arthropoda (Eklem bacaklılar)	Magnoliophyta (Flowering Plants)
Class	Insecta (böcek)	Magnoliopsida (Dicots)
Order	Coleoptera (Kın kanatlılar)	Caryophyllales (Caryophyllales)
Family	Dytiscidae	Polygonaceae
Genus	Agabus	Polygonum
Species	Agabus brunneus	Polygonum oxyspermum

Conservation Status

Brown Diving Beetle

EX — Extinct

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Brown Diving Beetle	Ray's Knotgrass
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.

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Denmark, Norway, and Sweden. Currently classified as 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 1 countries:

🇸🇪 Sweden