Arroyo Willow vs Common Least Skipper

Salix lasiolepis compared with Ancyloxypha numitor

Taxonomic Classification

Rank	Arroyo Willow	Common Least Skipper
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Malpighiales (Malpighiales)	Lepidoptera (Butterflies & Moths)
Family	Salicaceae	Hesperiidae
Genus	Salix	Ancyloxypha
Species	Salix lasiolepis	Ancyloxypha numitor

Conservation Status

Arroyo Willow

LC — Least Concern

Common Least Skipper

LC — Least Concern

Physical Characteristics

Attribute	Arroyo Willow	Common Least Skipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arroyo Willow

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Arroyo Willow

The Arroyo Willow, Salix lasiolepis, is a species. It is currently assessed as least concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.