Blue Cycad vs Cliff Mining Bee

Encephalartos nubimontanus compared with Andrena thoracica

Key Differences

• Blue Cycad is Extinct in the Wild while Cliff Mining Bee is Extinct.

Taxonomic Classification

Rank	Blue Cycad	Cliff Mining Bee
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Arthropoda (Arthropods)
Class	Cycadopsida (Cycadopsida)	Insecta (Insects)
Order	Cycadales (Cycadales)	Hymenoptera (Ants, Bees & Wasps)
Family	Zamiaceae	Andrenidae
Genus	Encephalartos	Andrena
Species	Encephalartos nubimontanus	Andrena thoracica

Conservation Status

Blue Cycad

EW — Extinct in the Wild

Cliff Mining Bee

EX — Extinct

Physical Characteristics

Attribute	Blue Cycad	Cliff Mining Bee
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Cycad

Cliff Mining Bee

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Luxembourg, Norway, and Sweden.

Blue Cycad

The Blue Cycad (Encephalartos nubimontanus) is a species in the genus Encephalartos. It is currently classified as Extinct in the Wild on the IUCN Red List. As a member of the genus Encephalartos, it shares ecological traits with closely related species.

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.