Alfken's Mini-miner vs Beech Tarcrust

Andrena alfkenella compared with Biscogniauxia nummularia

Key Differences

Alfken's Mini-miner is Near Threatened while Beech Tarcrust is Data Deficient.

Taxonomic Classification

Rank	Alfken's Mini-miner	Beech Tarcrust
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Arthropoda (Arthropods)	Ascomycota (Sac Fungi)
Class	Insecta (Insects)	Sordariomycetes (Sordariomycetes)
Order	Hymenoptera (Ants, Bees & Wasps)	Xylariales (Xylariales)
Family	Andrenidae	Graphostromataceae
Genus	Andrena	Biscogniauxia
Species	Andrena alfkenella	Biscogniauxia nummularia

Conservation Status

Alfken's Mini-miner

NT — Near Threatened

Beech Tarcrust

DD — Data Deficient

Physical Characteristics

Attribute	Alfken's Mini-miner	Beech Tarcrust
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.

Beech Tarcrust

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (7 countries), and South America (Brazil).

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.

Beech Tarcrust

The Beech Tarcrust (Biscogniauxia nummularia) is a species in the genus Biscogniauxia. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.