Big Water Crayfish vs Brown Diving Beetle

Cambarus robustus compared with Agabus brunneus

Key Differences

• Big Water Crayfish is Least Concern while Brown Diving Beetle is Extinct.

Taxonomic Classification

Rank	Big Water Crayfish	Brown Diving Beetle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class	Malacostraca (Crustaceans)	Insecta (Insects)
Order	Decapoda (Decapoda)	Coleoptera (Beetles)
Family	Cambaridae	Dytiscidae
Genus	Cambarus	Agabus
Species	Cambarus robustus	Agabus brunneus

Evolutionary Relationship

Big Water Crayfish and Brown Diving Beetle share a common ancestor at the Phylum level: Arthropoda. (Arthropods)

Conservation Status

Big Water Crayfish

LC — Least Concern

Brown Diving Beetle

EX — Extinct

Physical Characteristics

Attribute	Big Water Crayfish	Brown Diving Beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Water Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found in United States.

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden.

Big Water Crayfish

The Big Water Crayfish (Cambarus robustus) is a species in the genus Cambarus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine, freshwater, and terrestrial environments.

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.