Alfken's Mini-miner vs Bladder Fern

Andrena alfkenella compared with Cystopteris fragilis

Key Differences

• Alfken's Mini-miner is Near Threatened while Bladder Fern is Not Evaluated.

Taxonomic Classification

Rank	Alfken's Mini-miner	Bladder Fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Arthropoda (Arthropods)	Tracheophyta
Class	Insecta (Insects)	Polypodiopsida (Polypodiopsida)
Order	Hymenoptera (Ants, Bees & Wasps)	Polypodiales (Polypodiales)
Family	Andrenidae	Cystopteridaceae
Genus	Andrena	Cystopteris
Species	Andrena alfkenella	Cystopteris fragilis

Conservation Status

Alfken's Mini-miner

NT — Near Threatened

Bladder Fern

NE — Not Evaluated

Physical Characteristics

Attribute	Alfken's Mini-miner	Bladder Fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alfken's Mini-miner

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Luxembourg, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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).

Alfken's Mini-miner

The Alfken's Mini-miner (Andrena alfkenella) is a species in the genus Andrena. It is currently classified as Near Threatened on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Bladder Fern

The Bladder Fern (Cystopteris fragilis) is a species in the genus Cystopteris. Typically found in moist, shaded forest floors and tropical canopies.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden