Captain Cook's Bean Snail vs Common Least Skipper

Partula faba compared with Ancyloxypha numitor

Key Differences

• Captain Cook's Bean Snail is Extinct in the Wild while Common Least Skipper is Least Concern.

Taxonomic Classification

Rank	Captain Cook's Bean Snail	Common Least Skipper
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Gastropoda (Gastropoda)	Insecta (Insects)
Order	Stylommatophora (Stylommatophora)	Lepidoptera (Butterflies & Moths)
Family	Partulidae	Hesperiidae
Genus	Partula	Ancyloxypha
Species	Partula faba	Ancyloxypha numitor

Evolutionary Relationship

Captain Cook's Bean Snail and Common Least Skipper share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Captain Cook's Bean Snail

EW — Extinct in the Wild

Common Least Skipper

LC — Least Concern

Physical Characteristics

Attribute	Captain Cook's Bean Snail	Common Least Skipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Captain Cook's Bean Snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Captain Cook's Bean Snail

The Captain Cook's Bean Snail (Partula faba) is a species in the genus Partula. It is currently classified as Extinct in the Wild (EW) on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.