Bladder Fern vs Brown Diving Beetle

Cystopteris fragilis compared with Agabus brunneus

Key Differences

• Bladder Fern is Not Evaluated while Brown Diving Beetle is Extinct.

Taxonomic Classification

Rank	Bladder Fern	Brown Diving Beetle
Kingdom	Plantae (растения)	Animalia (животные)
Phylum	Tracheophyta	Arthropoda (членистоногие)
Class	Polypodiopsida (папоротниковые)	Insecta (насекомые)
Order	Polypodiales (многоножковые)	Coleoptera (жесткокрылые)
Family	Cystopteridaceae	Dytiscidae
Genus	Cystopteris	Agabus
Species	Cystopteris fragilis	Agabus brunneus

Conservation Status

Bladder Fern

NE — Not Evaluated

Brown Diving Beetle

EX — Extinct

Physical Characteristics

Attribute	Bladder Fern	Brown Diving Beetle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bladder Fern

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

Brown Diving Beetle

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium and Sweden.

Bladder Fern

The Bladder Fern (Cystopteris fragilis) 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.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden