Big Water Crayfish vs Birch Marble

Cambarus robustus compared with Apotomis betuletana

Taxonomic Classification

Rank	Big Water Crayfish	Birch Marble
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (Arthropods)	Arthropoda (Arthropods)
Class	Malacostraca (Crustaceans)	Insecta (Insects)
Order	Decapoda (Decapoda)	Lepidoptera (Butterflies & Moths)
Family	Cambaridae	Tortricidae
Genus	Cambarus	Apotomis
Species	Cambarus robustus	Apotomis betuletana

Evolutionary Relationship

Big Water Crayfish and Birch Marble share a common ancestor at the Phylum level: Arthropoda. (Arthropods)

Conservation Status

Big Water Crayfish

LC — Least Concern

Birch Marble

LC — Least Concern

Physical Characteristics

Attribute	Big Water Crayfish	Birch Marble
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.

Birch Marble

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, 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.

Birch Marble

The Birch Marble (Apotomis betuletana) is a species in the genus Apotomis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.