RMBL Butterfly List
Transcribed from Michael Soulι's list from 1989, by David Inouye, November 2004 with corrections. Additions include one by Ward Watt (Nov. 2004) and one by David Inouye (June 2007).
This list is primarily for the Gothic Townsite and lower Copper Creek. An appropriate field guide for the area is Paul Opler's Field Guide to Western Butterflies. Please note that this is not a comprehensive list, but only a starting point. Please send corrections/additions to data at rmbl.org.
Colias eriphyle yellow above and below, black wing margins, orange dot
Colias eurytheme orange above, yellow-orange below; black margins
Colias alexandra narrow or no black wing margin, greenish below on hindwing
Colias scudderii greenish-yellow to lemon yellow, no black on wings
Pieris napi (Green-veined White) entirely white; sometimes a few brown veins on underside
Pieris rapae (vagrant)
Pontia protodice (Checkered White) dark checker markings on uppersides of wings are brownish-black, underside markings have a yellow-greenish cast
Pontia occidentalis (Western White) dark checker markings on uppersides of wings are bluish-black, underside markings darker than in protodice and bluish- to plain black
Euchloe ausonides (Large Marble) bronze-green marbling on dorsal hindwing
Anthocharis sara (Sara's Orangetip) small; white to yellow ground with orange tips on forewings
Glaucopsyche lygdamus (Silvery Blue) ventral hindwing: 2 4 2 pattern of dark spots
Plebejus aquilo (Arctic Blue) ventral hindwing mottled white; scattered dark spots on ventral forewing
Plebejus melissa orange spots on ventral forewing and hindwing; dorsal orange on females only.
Plebejus saepiolus black bar on dorsal forewing; scattered black spots beneath
Lycaena heteronea (Blue Copper) scattered black spots on ventral forewing; spots on ventral hindwing faint, if any
Lycaena rubidus (Ruddy Copper) males bright copper; ventral hindwing nearly white
Plebeius [Icaricia] icarioides
Harkenclenus titus dark brown, prominent row of large red spots along entire ventral hind-wing.
Cercyonis oetus (Small Wood Nymph) all brown, large dark eyespot
Euptoieta claudia bright orange/brown/black/white pattern; eyespot near front of forewing
Nymphalis antiopa (Mourning Cloak) large butterfly, wings mostly brownish-black with a well-defined, striking cream-colored outer border
Nymphalis milberti (Milbert's Tortoiseshell) margin of dorsal wings have brown, orange, and white stripes. Overwinters as an adult.
Coenonympha tullia (Common Ringlet)
Speyeria callippe (absent since mid 1990s??, Carol Boggs)
Euphydryas gillettii (introduced)
Danaus plexippus (Monarch butterfly); photographed in South Gothic 26 June 2007