Cliff Mining Bee vs 美洲潛鴨

Andrena thoracica compared with Aythya americana

Key Differences

• Cliff Mining Bee is Extinct while 美洲潛鴨 is Not Evaluated.

Taxonomic Classification

Rank	Cliff Mining Bee	美洲潛鴨
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Arthropoda (节肢动物门)	Chordata (脊索动物门)
Class	Insecta (昆蟲綱)	Aves (鳥綱)
Order	Hymenoptera (膜翅目)	Anseriformes (雁形目)
Family	Andrenidae	Anatidae
Genus	Andrena	Aythya
Species	Andrena thoracica	Aythya americana

Evolutionary Relationship

Cliff Mining Bee and 美洲潛鴨 share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Cliff Mining Bee

EX — Extinct

美洲潛鴨

NE — Not Evaluated

Physical Characteristics

Attribute	Cliff Mining Bee	美洲潛鴨
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cliff Mining Bee

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Luxembourg, Norway, and Sweden.

美洲潛鴨

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (7 countries) and North America (United States).

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.

美洲潛鴨

赤头潜鸭（Aythya americana）在IUCN红色名录中被列为未评估（NE）。尚未依据IUCN红色名录标准进行评估，保育状况有待确定。

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden