Pseudocopaeodes eunus

Pseudocopaeodes eunus is a rare species of butterfly known by the common name alkali skipper. It is native to northern California and Nevada in the United States,^[1] and Baja California in Mexico.^[2] There are five subspecies.^[3] One, P. e. obscurus, the Carson wandering skipper, is treated as a federally listed endangered species of the United States. As of 2007 there are four known populations.^[4]

Pseudocopaeodes eunus
Conservation status
Vulnerable  (NatureServe)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Hesperiidae
Genus:	Pseudocopaeodes
Species:	P. eunus
Binomial name
Pseudocopaeodes eunus (Edwards, 1881)
Synonyms
Copaeodes eunus Edwards, 1881 Copaeodes wrightii Edwards, 1882 Copaeodes chromis Skinner, 1919

This butterfly is brownish to yellowish orange on the upper side and yellowish below. It is 2.5 to 3.2 centimeters in length.^[2]

This species occurs on alkali flats. The caterpillar of the species feeds on saltgrass (Distichlis spicata var. stricta). There is little other information about the biology of the species.^[1]

Subspecies

• Pseudocopaeodes eunus eunus
• Pseudocopaeodes eunus alinea Scott, 1981
• Pseudocopaeodes eunus chromis (Skinner, 1919) (Mexico)
• Pseudocopaeodes eunus obscurus Austin & Emmel, 1998 (eastern California, Nevada)
• Pseudocopaeodes eunus flavus Austin & Emmel, 1998 (Nevada)