Common Least Skipper vs

Ancyloxypha numitor compared with Usnea cornuta

Key Differences

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

Taxonomic Classification

Rank	Common Least Skipper
Kingdom	Animalia (動物)	Fungi (菌界)
Phylum	Arthropoda (節足動物)	Ascomycota (子嚢菌門)
Class	Insecta (昆虫)	Lecanoromycetes (チャシブゴケ菌綱)
Order	Lepidoptera (チョウ目)	Lecanorales (チャシブゴケ目)
Family	Hesperiidae	Parmeliaceae
Genus	Ancyloxypha	Usnea
Species	Ancyloxypha numitor	Usnea cornuta

Conservation Status

Common Least Skipper

LC — Least Concern

NT — Near Threatened

Physical Characteristics

Attribute	Common Least Skipper
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.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden. 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.

Usnea cornutaはParmeliaceae科の果状地衣類で、準絶滅危惧(NT)と評価されています。樹木の枝や小枝に垂れ下がる茂み状の葉状体を形成し、主に湿潤な森林環境に生息します。すべてのUsnea属の種と同様に大気汚染、特に二酸化硫黄に対して非常に敏感で、大気質の有用な生物指標として利用されます。