Buff-tailed Mining Bee vs Common Least Skipper

Andrena humilis compared with Ancyloxypha numitor

Key Differences

• Buff-tailed Mining Bee is Extinct while Common Least Skipper is Least Concern.

Taxonomic Classification

Rank	Buff-tailed Mining Bee	Common Least Skipper
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Arthropoda (artrópode)	Arthropoda (artrópode)
Class same	Insecta (inseto)	Insecta (inseto)
Order	Hymenoptera (Ants, Bees & Wasps)	Lepidoptera (Butterflies & Moths)
Family	Andrenidae	Hesperiidae
Genus	Andrena	Ancyloxypha
Species	Andrena humilis	Ancyloxypha numitor

Evolutionary Relationship

Buff-tailed Mining Bee and Common Least Skipper share a common ancestor at the Class level: Insecta. (inseto)

Conservation Status

Buff-tailed Mining Bee

EX — Extinct

Common Least Skipper

LC — Least Concern

Physical Characteristics

Attribute	Buff-tailed Mining Bee	Common Least Skipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Buff-tailed Mining Bee

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden.

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Buff-tailed Mining Bee

The Buff-Tailed Mining Bee (Andrena humilis) is a species in the genus Andrena. It is currently classified as Extinct on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Common Least Skipper

The Common Least Skipper (<em>Ancyloxypha numitor</em>) is a small butterfly in the family Hesperiidae, classified as Least Concern on the IUCN Red List. It is native to Canada and the United States, where it typically inhabits virtually all terrestrial and freshwater habitats within its range, showing a particular affinity for moist, grassy areas near water. The species is among the smallest skippers in North America, characterized by orange and brown wing coloration and a rapid, low-flying flight pattern close to vegetation. Adults typically nectar on small flowers while larvae feed on grasses, particularly those in wet meadows, marshes, stream margins, and disturbed grassy areas. The Common Least Skipper is frequently observed in wetland margins, wet prairies, and roadsides with rank grass growth. Its wide distribution across North America and habitat generalism across moist grassland and wetland types support its stable population and Least Concern conservation status. Biological traits of this species remain poorly documented in the scientific literature.