Common Ink Cap vs Common Least Skipper

Coprinopsis atramentaria compared with Ancyloxypha numitor

Taxonomic Classification

Rank	Common Ink Cap	Common Least Skipper
Kingdom	Fungi (mantar)	Animalia (hayvan)
Phylum	Basidiomycota (Bazitli mantarlar)	Arthropoda (Eklem bacaklılar)
Class	Agaricomycetes (Mushrooms)	Insecta (böcek)
Order	Agaricales (Lamelli mantarlar)	Lepidoptera (Pul kanatlılar)
Family	Psathyrellaceae	Hesperiidae
Genus	Coprinopsis	Ancyloxypha
Species	Coprinopsis atramentaria	Ancyloxypha numitor

Conservation Status

Common Ink Cap

LC — Least Concern

Common Least Skipper

LC — Least Concern

Physical Characteristics

Attribute	Common Ink Cap	Common Least Skipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Ink Cap

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (United States).

Common Least Skipper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada and United States.

Common Ink Cap

<em>Coprinopsis atramentaria</em>, commonly known as the common ink cap, is a saprotrophic fungus in the family Psathyrellaceae. It is classified as Least Concern on the IUCN Red List, with a distribution spanning Asia (including Taiwan), Europe, and North America. The species typically grows on forest floors, buried wood, stumps, and other decomposing woody substrates in temperate regions. As a saprotroph, it plays an important ecological role in breaking down organic matter. The common ink cap is notable for containing coprine, a compound that inhibits aldehyde dehydrogenase and causes unpleasant reactions when consumed with alcohol. Diet information for this species is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.

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.