Denotes entries with color photo(s)
Denotes entries containing textual species accounts

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Families

• Swallowtails (Family Papilionidae)
• Whites and Sulphurs (Family Pieridae)
• Gossamer-wing Butterflies (Family Lycaenidae)
• Metalmarks (Family Riodinidae)
• Brush-footed Butterflies (Family Nymphalidae)
• Skippers (Family Hesperiidae)

Swallowtails (Family Papilionidae)

Parnassians (Subfamily Parnassiinae)

Clodius Parnassian (Parnassius clodius)

Rocky Mountain Parnassian (Parnassius smintheus)

Swallowtails (Subfamily Papilioninae)

Black Swallowtail (Papilio polyxenes)

Old World Swallowtail (Papilio machaon)

Anise Swallowtail (Papilio zelicaon)

Indra Swallowtail (Papilio indra)

Eastern Tiger Swallowtail (Papilio glaucus)

Canadian Tiger Swallowtail (Papilio canadensis)

Western Tiger Swallowtail (Papilio rutulus)

Two-tailed Swallowtail (Papilio multicaudata)

Pale Swallowtail (Papilio eurymedon)

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Whites and Sulphurs (Family Pieridae)

Whites (Subfamily Pierinae)

Pine White (Neophasia menapia)

Becker's White (Pontia beckerii)

Spring White (Pontia sisymbrii)

Checkered White (Pontia protodice)

Western White (Pontia occidentalis)

Margined White (Pieris marginalis)

Cabbage White (Pieris rapae)

Large Marble (Euchloe ausonides)

Northern Marble (Euchloe creusa)

Desert Marble (Euchloe lotta)

Olympia Marble (Euchloe olympia)

Stella Orangetip (Anthocharis stella)

Sulphurs (Subfamily Coliadinae)

Clouded Sulphur (Colias philodice)

Orange Sulphur (Colias eurytheme)

Western Sulphur (Colias occidentalis)

Christina Sulphur (Colias christina)

Queen Alexandra's Sulphur (Colias alexandra)

Mead's Sulphur (Colias meadii)

Labrador Sulphur (Colias nastes)

Giant Sulphur (Colias gigantea)

Pelidne Sulphur (Colias pelidne)

Pink-edged Sulphur (Colias interior)

Cloudless Sulphur (Phoebis sennae)

Sleepy Orange (Eurema nicippe)

Dainty Sulphur (Nathalis iole)

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Gossamer-wing Butterflies (Family Lycaenidae)

Coppers (Subfamily Lycaeninae)

American Copper (Lycaena phlaeas)

Lustrous Copper (Lycaena cupreus)

Gray Copper (Lycaena dione)

Edith's Copper (Lycaena editha)

Bronze Copper (Lycaena hyllus)

Ruddy Copper (Lycaena rubidus)

Blue Copper (Lycaena heteronea)

Purplish Copper (Lycaena helloides)

Lilac-bordered Copper (Lycaena nivalis)

Mariposa Copper (Lycaena mariposa)

Hairstreaks (Subfamily Theclinae)

Coral Hairstreak (Satyrium titus)

Sooty Hairstreak (Satyrium fuliginosum)

Acadian Hairstreak (Satyrium acadica)

California Hairstreak (Satyrium californica)

Sylvan Hairstreak (Satyrium sylvinus)

Striped Hairstreak (Satyrium liparops)

Hedgerow Hairstreak (Satyrium saepium)

Western Green Hairstreak (Callophrys affinis)

Sheridan's Green Hairstreak (Callophrys sheridani)

Brown Elfin (Callophrys augustinus)

Moss' Elfin (Callophrys mossii)

Hoary Elfin (Callophrys polios)

Western Pine Elfin (Callophrys eryphon)

Thicket Hairstreak (Callophrys spinetorum)

Juniper Hairstreak (Callophrys gryneus)

Nelson's Hairstreak (Callophrys nelsoni)

Gray Hairstreak (Strymon melinus)

Blues (Subfamily Polyommatinae)

Western Tailed-Blue (Everes amyntula)

Spring Azure (Celastrina "ladon")

Summer Azure (Celastrina neglecta)

Western Square-dotted Blue (Euphilotes battoides)

Rocky Mountain Dotted-Blue (Euphilotes ancilla)

Arrowhead Blue (Glaucopsyche piasus)

Silvery Blue (Glaucopsyche lygdamus)

Northern Blue (Lycaeides idas)

Melissa Blue (Lycaeides melissa)

Greenish Blue (Plebeius saepiolus)

Boisduval's Blue (Plebeius icarioides)

Shasta Blue (Plebeius shasta)

Lupine Blue (Plebeius lupini)

Arctic Blue (Agriades glandon)

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Metalmarks (Family Riodinidae)

Mormon Metalmark (Apodemia mormo)

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Brush-footed Butterflies (Family Nymphalidae)

Heliconians and Fritillaries (Subfamily Heliconiinae)

Variegated Fritillary (Euptoieta claudia)

Great Spangled Fritillary (Speyeria cybele)

Aphrodite Fritillary (Speyeria aphrodite)

Regal Fritillary (Speyeria idalia)

Edwards' Fritillary (Speyeria edwardsii)

Coronis Fritillary (Speyeria coronis)

Zerene Fritillary (Speyeria zerene)

Callippe Fritillary (Speyeria callippe)

Great Basin Fritillary (Speyeria egleis)

Northwestern Fritillary (Speyeria hesperis)

Hydaspe Fritillary (Speyeria hydaspe)

Mormon Fritillary (Speyeria mormonia)

Bog Fritillary (Boloria eunomia)

Silver-bordered Fritillary (Boloria selene)

Meadow Fritillary (Boloria bellona)

Frigga Fritillary (Boloria frigga)

Relict Fritillary (Boloria kriemhild)

Pacific Fritillary (Boloria epithore)

Freija Fritillary (Boloria freija)

Alberta Fritillary (Boloria alberta)

Astarte Fritillary (Boloria astarte)

Arctic Fritillary (Boloria chariclea)

True Brush-foots (Subfamily Nymphalinae)

Gorgone Checkerspot (Chlosyne gorgone)

Silvery Checkerspot (Chlosyne nycteis)

Northern Checkerspot (Chlosyne palla)

Rockslide Checkerspot (Chlosyne whitneyi)

Sagebrush Checkerspot (Chlosyne acastus)

Pearl Crescent (Phyciodes tharos)

Northern Crescent (Phyciodes cocyta)

Tawny Crescent (Phyciodes batesii)

Field Crescent (Phyciodes pratensis)

Pale Crescent (Phyciodes pallida)

Mylitta Crescent (Phyciodes mylitta)

Gillette's Checkerspot (Euphydryas gillettii)

Variable Checkerspot (Euphydryas chalcedona)

Edith's Checkerspot (Euphydryas editha)

Eastern Comma (Polygonia comma)

Satyr Comma (Polygonia satyrus)

Green Comma (Polygonia faunus)

Hoary Comma (Polygonia gracilis)

Gray Comma (Polygonia progne)

Compton Tortoiseshell (Nymphalis vaualbum)

California Tortoiseshell (Nymphalis californica)

Mourning Cloak (Nymphalis antiopa)

Milbert's Tortoiseshell (Nymphalis milberti)

American Lady (Vanessa virginiensis)

Painted Lady (Vanessa cardui)

West Coast Lady (Vanessa annabella)

Red Admiral (Vanessa atalanta)

Admirals and Relatives (Subfamily Limenitidinae)

Red-spotted Purple (Limenitis arthemis)

'Astyanax' Red-spotted Purple (Limenitis arthemis astyanax)

White Admiral (Limenitis arthemis arthemis)

Viceroy (Limenitis archippus)

Weidemeyer's Admiral (Limenitis weidemeyerii)

Lorquin's Admiral (Limenitis lorquini)

Satyrs (Subfamily Satyrinae)

Eyed Brown (Satyrodes eurydice)

Hayden's Ringlet (Coenonympha haydenii)

Common Ringlet (Coenonympha tullia)

Common Wood Nymph (Cercyonis pegala)

Mead's Wood Nymph (Cercyonis meadii)

Great Basin Wood Nymph (Cercyonis sthenele)

Small Wood Nymph (Cercyonis oetus)

Magdalena Alpine (Erebia magdalena)

Red-disked Alpine (Erebia discoidalis)

Yellow-dotted Alpine (Erebia pawlowskii)

Colorado Alpine (Erebia callias)

Common Alpine (Erebia epipsodea)

Ridings' Satyr (Neominois ridingsii)

Wyoming Satyr (Neominois wyomingo)

Chryxus Arctic (Oeneis chryxus)

Uhler's Arctic (Oeneis uhleri)

Alberta Arctic (Oeneis alberta)

White-veined Arctic (Oeneis bore)

Jutta Arctic (Oeneis jutta)

Melissa Arctic (Oeneis melissa)

Polixenes Arctic (Oeneis polixenes)

Monarchs (Subfamily Danainae)

Monarch (Danaus plexippus)

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Skippers (Family Hesperiidae)

Spread-wing Skippers (Subfamily Pyrginae)

Silver-spotted Skipper (Epargyreus clarus)

Northern Cloudywing (Thorybes pylades)

Dreamy Duskywing (Erynnis icelus)

Mottled Duskywing (Erynnis martialis)

Pacuvius Duskywing (Erynnis pacuvius)

Afranius Duskywing (Erynnis afranius)

Persius Duskywing (Erynnis persius)

Grizzled Skipper (Pyrgus centaureae)

Two-banded Checkered-Skipper (Pyrgus ruralis)

Small Checkered-Skipper (Pyrgus scriptura)

Common Checkered-Skipper (Pyrgus communis)

Northern White-Skipper (Heliopetes ericetorum)

Common Sootywing (Pholisora catullus)

Mohave Sootywing (Hesperopsis libya)

Grass Skippers (Subfamily Hesperiinae)

Arctic Skipper (Carterocephalus palaemon)

Garita Skipperling (Oarisma garita)

European Skipper (Thymelicus lineola)

Uncas Skipper (Hesperia uncas)

Juba Skipper (Hesperia juba)

Common Branded Skipper (Hesperia comma)

Ottoe Skipper (Hesperia ottoe)

Leonard's Skipper (Hesperia leonardus)

Pahaska Skipper (Hesperia pahaska)

Plains Skipper (Hesperia assiniboia)

Nevada Skipper (Hesperia nevada)

Peck's Skipper (Polites peckius)

Rhesus Skipper (Polites rhesus)

Sandhill Skipper (Polites sabuleti)

Draco Skipper (Polites draco)

Tawny-edged Skipper (Polites themistocles)

Crossline Skipper (Polites origenes)

Long Dash (Polites mystic)

Sonora Skipper (Polites sonora)

Arogos Skipper (Atrytone arogos)

Delaware Skipper (Anatrytone logan)

Woodland Skipper (Ochlodes sylvanoides)

Dun Skipper (Euphyes vestris)

Dusted Skipper (Atrytonopsis hianna)

Simius Roadside-Skipper ("Amblyscirtes" simius)

Oslar's Roadside-Skipper (Amblyscirtes oslari)

Common Roadside-Skipper (Amblyscirtes vialis)

Giant-Skippers (Subfamily Megathyminae)

Strecker's Giant-Skipper (Megathymus streckeri)

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