Here is a list of the butterflies of the Arctic National Wildlife Refuge, as of 2013. These have all been observed north of the Continental Divide (the northern half of the Refuge) unless otherwise noted.
1. In the Alaska Lepidoptera Survey collection:
Hesperiidae:
Hesperia comma (Common Branded Skipper)*
Pyrgus centaureae (Grizzled Skipper)
Papilionidae:
Parnassius eversmanni (Eversmann's Parnassian)
Papilio machaon (Old World Swallowtail)
Pieridae:
Pontia occidentalis (Western White)
Pieris angelika (Arctic White)
Colias hecla (Hecla Sulphur)
Colias tyche boothii (Booth's Sulphur)
Colias tyche thula (Thula Sulphur)
Colias nastes (Labrador Sulphur)
Colias palaeno (Palaeno Sulphur)
Colias philodice (Clouded Sulphur)
Colias gigantea (Giant Sulphur)*
Euchloe creusa (Northern Marble)
Lycaenidae:
Lycaena phlaeas (American Copper)
Plebejus idas (Northern Blue)
Plebejus glandon (Arctic Blue)
Glaucopsyche lygdamus (Silvery Blue)
Plebejus optilete (Cranberry Blue)*
Nymphalidae:
Boloria alaskensis (Mountain Fritillary)
Boloria eunomia (Bog Fritillary)
Boloria frigga (Frigga Fritillary)
Boloria improba (Dingy Fritillary)
Boloria polaris (Polaris Fritillary)
Boloria freija (Freija Fritillary)
Boloria astarte (Astarte Fritillary)
Boloria chariclea (Arctic Fritillary)
Polygonia gracilis (Hoary Comma)
Coenonympha kodiak (Kodiak Ringlet)
Oeneis bore (White-veined Arctic)
Oeneis alpina (Sentinel Arctic)
Oeneis melissa (Melissa Arctic)
Oeneis polixenes (Polixenes Arctic)
Oeneis uhleri (Uhler's Arctic)
Erebia rossii (Ross's Alpine)
Erebia disa (Disa Alpine)
Erebia mackinleyensis (Mt. McKinley Alpine)
Erebia fasciata (Banded Alpine)
Erebia pawloskii (Theano Alpine)
Erebia youngi (Young's Alpine)
Erebia lafontainei (Reddish Alpine)
Erebia occulta (Eskimo Alpine)
2. Other North Slope species likely to occur in the Refuge:
Nymphalidae:
Nymphalis antiopa (Mourning Cloak)
* Species with an asterisk have (to date) been found only south of the continental divide in Arctic Refuge.
[This list compiled in 2013 by Dr. Kenelm Philip, an expert on the butterfly fauna of Alaska and the circumpolar north since the 1966.]
