Brown Scalewort vs Cliff Mining Bee

Radula aquilegia compared with Andrena thoracica

Key Differences

Brown Scalewort is Not Evaluated while Cliff Mining Bee is Extinct.

Taxonomic Classification

Rank	Brown Scalewort	Cliff Mining Bee
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Marchantiophyta (liverwort)	Arthropoda (Arthropods)
Class	Jungermanniopsida (Jungermanniopsida)	Insecta (Insects)
Order	Porellales (Porellales)	Hymenoptera (Ants, Bees & Wasps)
Family	Radulaceae	Andrenidae
Genus	Radula	Andrena
Species	Radula aquilegia	Andrena thoracica

Conservation Status

Brown Scalewort

NE — Not Evaluated

Cliff Mining Bee

EX — Extinct

Physical Characteristics

Attribute	Brown Scalewort	Cliff Mining Bee
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Scalewort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

Cliff Mining Bee

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Luxembourg, Norway, and Sweden.

Brown Scalewort

The Brown Scalewort (Radula aquilegia) is a species in the genus Radula. Native to Europe, inhabiting ecosystems characteristic of the region. Distributed across Norway, Portugal, and Sweden. As a member of the genus Radula, it shares characteristics with related species within this taxonomic group.

Cliff Mining Bee

The Cliff Mining Bee, Andrena species in the family Andrenidae, is a solitary ground-nesting bee that excavates tunnels in cliff faces, earthen banks, and compacted sandy or loamy soils, where the loose or friable substrates exposed in cliff profiles provide ideal nesting conditions. Mining bees in the genus Andrena are among the most species-rich solitary bee genera in the world, with hundreds of species across the Holarctic region, many narrowly specialized in their choice of pollen host plants. Female cliff mining bees construct vertical or angled burrows in cliff faces, with lateral cells off the main shaft, each containing a pollen ball and a single egg. Males are typically smaller and emerge before females to establish territories near nesting sites. Many Andrena species are oligolectic, collecting pollen from only a small number of plant species, making their populations sensitive to the availability of specific flowering plants in the landscape surrounding nesting areas. Cliff and bank nesting habitats provide well-drained, sun-warmed substrates essential for brood development. The loss of natural cliff faces and earthen banks to development, vegetation succession, and quarrying reduces available nesting habitat for cliff mining bees.