Common Least Skipper vs small tortoiseshell

Ancyloxypha numitor compared with Aglais urticae

Key Differences

• Common Least Skipper is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Common Least Skipper	small tortoiseshell
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Arthropoda (节肢动物门)	Arthropoda (节肢动物门)
Class same	Insecta (昆蟲綱)	Insecta (昆蟲綱)
Order same	Lepidoptera (鱗翅目)	Lepidoptera (鱗翅目)
Family	Hesperiidae	Nymphalidae (Brush-footed Butterflies)
Genus	Ancyloxypha	Aglais
Species	Ancyloxypha numitor	Aglais urticae

Evolutionary Relationship

Common Least Skipper and small tortoiseshell share a common ancestor at the Order level: Lepidoptera. (鱗翅目)

Conservation Status

Common Least Skipper

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Common Least Skipper	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

small tortoiseshell

小玳瑁蛱蝶(Aglais urticae)在IUCN红色名录中被列为近危(NT)物种。接近符合受威胁种标准，如无保护措施，种群可能变得脆弱。