Brown Diving Beetle vs Common Oak

Agabus brunneus compared with Quercus robur

Key Differences

Brown Diving Beetle is Extinct while Common Oak is Least Concern.

Taxonomic Classification

Rank	Brown Diving Beetle	Common Oak
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Magnoliophyta (Flowering Plants)
Class	Insecta (Insects)	Magnoliopsida (Dicots)
Order	Coleoptera (Beetles)	Fagales (Beeches & Oaks)
Family	Dytiscidae	Fagaceae (Beech Family)
Genus	Agabus	Quercus (Oaks)
Species	Agabus brunneus	Quercus robur

Conservation Status

Brown Diving Beetle

EX — Extinct

Common Oak

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Brown Diving Beetle	Common Oak
Diet	—	Autotroph
Average Lifespan	—	1000 years
Average Length	—	25.0 m
Average Weight	—	—

Habitat & Geographic Range

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden.

Common Oak

Habitat

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

Range

Widely distributed across Africa (Lesotho, South Africa), Asia (Armenia, India), Europe (8 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (4 countries).

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.

Common Oak

One of Europe's most important and widespread deciduous trees, the pedunculate oak can live over 1,000 years, reach 40 meters, and support the greatest biodiversity of any European tree species — over 2,300 species of insects, fungi, lichens, mosses, and birds directly depend on mature oaks. Found across Europe to western Asia in temperate forests, its hard, durable wood has been foundational to shipbuilding, architecture, and barrel making throughout history.