Denotes entries with color photo(s)
Denotes entries containing textual species accounts
Clodius Parnassian (Parnassius clodius)
Rocky Mountain Parnassian (Parnassius smintheus)
Pipevine Swallowtail (Battus philenor)
Black Swallowtail (Papilio polyxenes)
Old World Swallowtail (Papilio machaon)
Anise Swallowtail (Papilio zelicaon)
Indra Swallowtail (Papilio indra)
Giant Swallowtail (Papilio cresphontes)
Western Tiger Swallowtail (Papilio rutulus)
Two-tailed Swallowtail (Papilio multicaudata)
Pale Swallowtail (Papilio eurymedon)
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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)
Desert Marble (Euchloe lotta)
California Marble (Euchloe hyantis)
Desert Orangetip (Anthocharis cethura)
Stella Orangetip (Anthocharis stella)
Southwestern Orangetip (Anthocharis thoosa)
Gray Marble (Anthocharis lanceolata)
Clouded Sulphur (Colias philodice)
Orange Sulphur (Colias eurytheme)
Queen Alexandra's Sulphur (Colias alexandra)
Southern Dogface (Zerene cesonia)
White Angled-Sulphur (Anteos clorinde)
Cloudless Sulphur (Phoebis sennae)
Orange-barred Sulphur (Phoebis philea)
Large Orange Sulphur (Phoebis agarithe)
Boisduval's Yellow (Eurema boisduvaliana)
Mexican Yellow (Eurema mexicana)
Mimosa Yellow (Eurema nise)
Sleepy Orange (Eurema nicippe)
Dainty Sulphur (Nathalis iole)
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Tailed Copper (Lycaena arota)
Lustrous Copper (Lycaena cupreus)
Edith's Copper (Lycaena editha)
Ruddy Copper (Lycaena rubidus)
Blue Copper (Lycaena heteronea)
Purplish Copper (Lycaena helloides)
Lilac-bordered Copper (Lycaena nivalis)
Colorado Hairstreak (Hypaurotis crysalus)
Golden Hairstreak (Habrodais grunus)
Great Purple Hairstreak (Atlides halesus)
Silver-banded Hairstreak (Chlorostrymon simaethis)
Coral Hairstreak (Satyrium titus)
Behr's Hairstreak (Satyrium behrii)
Sooty Hairstreak (Satyrium fuliginosum)
California Hairstreak (Satyrium californica)
Sylvan Hairstreak (Satyrium sylvinus)
Mountain Mahogany Hairstreak (Satyrium tetra)
Hedgerow Hairstreak (Satyrium saepium)
Western Green Hairstreak (Callophrys affinis)
Sheridan's Green Hairstreak (Callophrys sheridani)
Desert Green Hairstreak (Callophrys comstocki)
Brown Elfin (Callophrys augustinus)
Desert Elfin (Callophrys fotis)
Western Pine Elfin (Callophrys eryphon)
Thicket Hairstreak (Callophrys spinetorum)
Juniper Hairstreak (Callophrys gryneus)
Nelson's Hairstreak (Callophrys nelsoni)
Gray Hairstreak (Strymon melinus)
Mallow Scrub-Hairstreak (Strymon istapa)
Leda Ministreak (Ministrymon leda)
Western Pygmy-Blue (Brephidium exile)
Marine Blue (Leptotes marina)
Ceraunus Blue (Hemiargus ceraunus)
Reakirt's Blue (Hemiargus isola)
Eastern Tailed-Blue (Everes comyntas)
Western Tailed-Blue (Everes amyntula)
Spring Azure (Celastrina "ladon")
Bernardino Dotted-Blue (Euphilotes bernardino)
Ellis' Dotted-Blue (Euphilotes ellisi)
Bauer's Dotted-Blue (Euphilotes baueri)
Intermediate Dotted-Blue (Euphilotes intermedia)
Pacific Dotted-Blue (Euphilotes enoptes)
Mojave Dotted-Blue (Euphilotes mojave)
Rocky Mountain Dotted-Blue (Euphilotes ancilla)
Pallid Dotted-Blue (Euphilotes pallescens)
Spalding's Dotted-Blue (Euphilotes spaldingi)
Small Dotted-Blue (Philotiella speciosa)
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)
Acmon Blue (Plebeius acmon)
Lupine Blue (Plebeius lupini)
Sierra Nevada Blue (Agriades podarce)
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Fatal Metalmark (Calephelis nemesis)
Wright's Metalmark (Calephelis wrighti)
Mormon Metalmark (Apodemia mormo)
Palmer's Metalmark (Apodemia palmeri)
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American Snout (Libytheana carinenta)
Gulf Fritillary (Agraulis vanillae)
Variegated Fritillary (Euptoieta claudia)
Great Spangled Fritillary (Speyeria cybele)
Nokomis Fritillary (Speyeria nokomis)
Coronis Fritillary (Speyeria coronis)
Zerene Fritillary (Speyeria zerene)
Carol's Fritillary (Speyeria carolae)
Callippe Fritillary (Speyeria callippe)
Great Basin Fritillary (Speyeria egleis)
Northwestern Fritillary (Speyeria hesperis)
Mormon Fritillary (Speyeria mormonia)
Pacific Fritillary (Boloria epithore)
Dotted Checkerspot (Poladryas minuta)
Fulvia Checkerspot (Thessalia fulvia)
Leanira Checkerspot (Thessalia leanira)
California Patch (Chlosyne californica)
Bordered Patch (Chlosyne lacinia)
Northern Checkerspot (Chlosyne palla)
Sagebrush Checkerspot (Chlosyne acastus)
Hoffmann's Checkerspot (Chlosyne hoffmanni)
Texan Crescent (Phyciodes texana)
Phaon Crescent (Phyciodes phaon)
Pearl Crescent (Phyciodes tharos)
Northern Crescent (Phyciodes cocyta)
Tawny Crescent (Phyciodes batesii)
Field Crescent (Phyciodes pratensis)
California Crescent (Phyciodes orseis)
Pale Crescent (Phyciodes pallida)
Mylitta Crescent (Phyciodes mylitta)
Variable Checkerspot (Euphydryas chalcedona)
Edith's Checkerspot (Euphydryas editha)
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)
Common Buckeye (Junonia coenia)
Tropical Buckeye (Junonia genoveva)
Viceroy (Limenitis archippus)
Weidemeyer's Admiral (Limenitis weidemeyerii)
Lorquin's Admiral (Limenitis lorquini)
California Sister (Adelpha bredowii)
Hackberry Emperor (Asterocampa celtis)
Canyonland Satyr (Cyllopsis pertepida)
Common Ringlet (Coenonympha tullia)
Common Wood Nymph (Cercyonis pegala)
Great Basin Wood Nymph (Cercyonis sthenele)
Small Wood Nymph (Cercyonis oetus)
Ridings' Satyr (Neominois ridingsii)
Chryxus Arctic (Oeneis chryxus)
Monarch (Danaus plexippus)
Queen (Danaus gilippus)
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Silver-spotted Skipper (Epargyreus clarus)
Hammock Skipper (Polygonus leo)
Northern Cloudywing (Thorybes pylades)
Mexican Cloudywing (Thorybes mexicana)
Golden-headed Scallopwing (Staphylus ceos)
Arizona Powdered Skipper (Systasea zampa)
White-patched Skipper (Chiomara georgina)
Dreamy Duskywing (Erynnis icelus)
Sleepy Duskywing (Erynnis brizo)
Rocky Mountain Duskywing (Erynnis telemachus)
Propertius Duskywing (Erynnis propertius)
Meridian Duskywing (Erynnis meridianus)
Pacuvius Duskywing (Erynnis pacuvius)
Funereal Duskywing (Erynnis funeralis)
Persius Duskywing (Erynnis persius)
Two-banded Checkered-Skipper (Pyrgus ruralis)
Small Checkered-Skipper (Pyrgus scriptura)
Common Checkered-Skipper (Pyrgus communis)
White Checkered-Skipper (Pyrgus albescens)
Erichson's White-Skipper (Heliopetes domicella)
Northern White-Skipper (Heliopetes ericetorum)
Common Sootywing (Pholisora catullus)
Mohave Sootywing (Hesperopsis libya)
Saltbush Sootywing (Hesperopsis alpheus)
MacNeill's Sootywing (Hesperopsis gracielae)
Julia's Skipper (Nastra julia)
Orange Skipperling (Copaeodes aurantiacia)
Fiery Skipper (Hylephila phyleus)
Alkali Skipper (Pseudocopaeodes eunus)
Uncas Skipper (Hesperia uncas)
Juba Skipper (Hesperia juba)
Western Branded Skipper (Hesperia colorado)
Pahaska Skipper (Hesperia pahaska)
Lindsey's Skipper (Hesperia lindseyi)
Sierra Skipper (Hesperia miriamae)
Nevada Skipper (Hesperia nevada)
Sandhill Skipper (Polites sabuleti)
Draco Skipper (Polites draco)
Sonora Skipper (Polites sonora)
Sachem (Atalopedes campestris)
Woodland Skipper (Ochlodes sylvanoides)
Yuma Skipper (Ochlodes yuma)
Dun Skipper (Euphyes vestris)
Python Skipper (Atrytonopsis python)
Eufala Skipper (Lerodea eufala)
Brazilian Skipper (Calpodes ethlius)
Mojave Giant-Skipper (Agathymus alliae)
Yucca Giant-Skipper (Megathymus yuccae)
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