Brittle Bladderfern vs Brown Diving Beetle

Cystopteris tenuis compared with Agabus brunneus

Key Differences

• Brittle Bladderfern is Not Evaluated while Brown Diving Beetle is Extinct.

Taxonomic Classification

Rank	Brittle Bladderfern	Brown Diving Beetle
Kingdom	Plantae (planta)	Animalia (Animals)
Phylum	Tracheophyta	Arthropoda (artrópodos)
Class	Polypodiopsida (Polypodiopsida)	Insecta (insecto)
Order	Polypodiales (Polypodiales)	Coleoptera (coleópteros)
Family	Cystopteridaceae	Dytiscidae
Genus	Cystopteris	Agabus
Species	Cystopteris tenuis	Agabus brunneus

Conservation Status

Brittle Bladderfern

NE — Not Evaluated

Brown Diving Beetle

EX — Extinct

Physical Characteristics

Attribute	Brittle Bladderfern	Brown Diving Beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brittle Bladderfern

Habitat

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

Range

Distributed across Canada and United States.

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden.

Brittle Bladderfern

The Brittle Bladderfern (Cystopteris tenuis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

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.