Butterflies of the Northern Colorado Front Range

This is a collation of the recorded sightings for Boulder, Broomfield, Clear Creek, Gilpin, Jefferson, Larimer, Douglas and Park Counties taken from the website BUTTERFLIES AND MOTHS OF NORTH AMERICA hosted and maintained by the Big Sky Institute at Montana State University.

Parnassians and Swallowtails (Papilionidae)

Parnassians (Parnassiinae)

Rocky Mountain Parnassian (Parnassius smintheus)

Swallowtails (Papilioninae)

Pipevine Swallowtail (Battus philenor)
Old World Swallowtail (Papilio-machaon)
Black Swallowtail (Papilio polyxenes)
Anise Swallowtail (Papilio zelicaon)
Indra Swallowtail (Papilio indra)
Eastern Tiger Swallowtail (Papilio glaucus)
Western Tiger Swallowtail (Papilio rutulus)
Pale Swallowtail (Papilio eurymedon)
Two-tailed Swallowtail (Papilio multicaudata)
Spicebush Swallowtail (Papilio troilus)
Giant Swallowtail (Papilio cresphontes)


Whites and Sulphurs (Pieridae)

Whites (Pierinae)

Pine White (Neophasia menapia)
Florida White (Glutaphrissa drusilla)
Becker’s White (Pontia beckerii)
Checkered White (Pontia protodice)
Western White (Pontia occidentalis)
Spring White (Pontia sisymbrii)
Cabbage White (Pieris rapae)
Margined White (Pieris marginalis)
Great Southern White (Ascia monuste)
Large Marble (Euchloe ausonides)
Olympia Marble (Euchloe olympia)
Southern Rocky Mountain Orangetip (Anthocharis julia)

Sulphurs (Coliadinae)

Clouded Sulphur (Colias philodice)
Orange Sulphur (Colias eurytheme)
Queen Alexandra’s Sulphur (Colias alexandra)
Mead’s Sulphur (Colias meadii)
Scudder’s Sulphur (Colias scudderi)
Southern Dogface (Zerene cesonia)
White Angled-Sulphur (Anteos clorinde)
Cloudless Sulphur (Phoebis sennae)
Large Orange Sulphur (Phoebis agarithe)
Orange-barred Sulphur (Phoebis philea)
Lyside Sulphur (Kricogonia lyside)
Mexican Yellow (Eurema mexicana)
Little Yellow (Eurema-lisa)
Sleepy Orange (Abaeis nicippe)
Dainty Sulphur (Nathalis iole)


Gossamer-wing Butterflies (Lycaenidae)

Coppers (Lycaeninae)

Lustrous Copper (Lycaena cupreus)
Tailed Copper (Lycaena-arota)
Edith’s Copper (Lycaena-editha)
Gray Copper (Lycaena dione)
Bronze Copper (Lycaena hyllus)
Ruddy Copper (Lycaena rubidus)
Blue Copper (Lycaena heteronea)
Purplish Copper (Lycaena helloides)
Lilac-bordered Copper (Lycaena nivalis)

Hairstreaks (Theclinae)

Colorado Hairstreak (Hypaurotis crysalus)
Western Green Hairstreak (Callophrys affinis)
Sheridan’s Green Hairstreak (Callophrys sheridanii)
Juniper Hairstreak (Callophrys gryneus)
Thicket Hairstreak (Callophrys spinetorum)
Brown Elfin (Callophrys augustinus)
Moss’ Elfin (Callophrys mossii)
Hoary Elfin (Callophrys polios)
Western Pine Elfin (Callophrys eryphon)
Coral Hairstreak (Satyrium titus)
Acadian Hairstreak (Satyrium acadica)
California Hairstreak (Satyrium californica)
Sylvan Hairstreak (Satyrium-sylvinus)
Banded Hairstreak (Satyrium-calanus)
Striped Hairstreak (Satyrium liparops)
Hedgerow Hairstreak (Satyrium saepium)
Behr’s Hairstreak (Satyrium behrii)
Sagebrush Sooty Hairstreak(Satyrium semiluna)
Gray Hairstreak (Strymon melinus)
Leda Ministreak (Ministrymon leda)
Gray Ministreak (Ministrymon azia
White M Hairstreak (Parrhasius m-album)

Blues (Polyommatinae)

Marine Blue (Leptotes marina)
Western Pygmy-Blue (Brephidium exilis)
Eastern Tailed-Blue (Cupido comyntas)
Western Tailed-Blue (Cupido amyntula)
Spring Azure (Celastrina “ladon”)
Summer Azure (Celastrina neglecta)
Hops Azure (Celastrina humulus)
Arrowhead Blue (Glaucopsyche piasus)
Silvery Blue (Glaucopsyche lygdamus)
Rocky Mountain Dotted-Blue (Euphilotes ancilla)
Rita Dotted-Blue (Euphilotes rita)
Reakirt’s Blue (Echinargus isola)
Melissa Blue (includes Karner Blue) (Plebejus melissa)
Greenish Blue (Plebejus saepiolus)
Boisduval’s Blue (Plebejus icarioides)
Shasta Blue (Plebejus shasta)
Texan Blue (Plebejus “lupini” texanus)
Lupine Blue (Plebejus lupini)
Arctic Blue (Plebejus glandon)


Metalmarks (Riodinidae)

Mormon Metalmark (Apodemia mormo)
Nais Metalmark (Apodemia nais)


Brush-footed Butterflies (Nymphalidae)

Snouts (Libytheinae)

American Snout (Libytheana carinenta)

Milkweed Butterflies (Danainae)

Monarch (Danaus plexippus)
Queen (Danaus gilippus)

Longwings (Heliconiinae)

Gulf Fritillary (Agraulis vanillae)
Zebra Heliconian (Heliconius charithonia)
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)
Atlantis Fritillary (Speyeria atlantis)
Great Basin Fritillary (Speyeria-egleis)
Northwestern Fritillary (Speyeria hesperis)
Mormon Fritillary (Speyeria mormonia)
Bog Fritillary (Boloria eunomia)
Silver-bordered Fritillary (Boloria selene)
Meadow Fritillary (Boloria-bellona)
Frigga Fritillary (Boloria frigga)
Freija Fritillary (Boloria freija)
Arctic Fritillary (Boloria chariclea)

True Brushfoots (Nymphalinae)

Dotted Checkerspot (Poladryas minuta)
Arachne Checkerspot (Poladryas arachne)
Gorgone Checkerspot (Chlosyne gorgone)
Silvery Checkerspot (Chlosyne nycteis)
Northern Checkerspot (Chlosyne palla)
Rockslide Checkerspot (Chlosyne whitneyi)
Graphic Crescent (Phyciodes graphica)
Pale Crescent (Phyciodes pallida)
Mylitta Crescent (Phyciodes mylitta)
Pearl Crescent (Phyciodes tharos)
Northern Crescent (Phyciodes cocyta)
Field Crescent (Phyciodes pulchella)
Fulvia Checkerspot (Thessalia-fulvia)
Painted Crescent (Phyciodes-picta)
Edith’s Checkerspot (Euphydryas-editha)
Texan Crescent (Anthanassa texana)
Variable Checkerspot (Euphydryas anica)
Common Buckeye (Junonia coenia)
Question Mark (Polygonia interrogationis)
Eastern Comma (Polygonia comma)
Satyr Comma (Polygonia satyrus)
Green Comma (Polygonia faunus)
Hoary Comma (Polygonia gracilis)
Gray Comma (Polygonia progne)
Milbert’s Tortoiseshell (Aglais milberti)
Compton Tortoiseshell (Nymphalis vaualbum)
Mourning Cloak (Nymphalis antiopa)
California Tortoiseshell (Nymphalis californica)
Red Admiral (Vanessa atalanta)
Painted Lady (Vanessa cardui)
West Coast Lady (Vanessa annabella)
American Lady (Vanessa virginiensis)

Admirals and Relatives (Limenitidinae)

Viceroy (Limenitis archippus)
Weidemeyer’s Admiral (Limenitis weidemeyerii)
Common Mestra (Mestra amymone)
Arizona Sister ( Adelpha eulalia)

Leafwings (Charaxinae)

Goatweed Leafwing (Anaea andria)

Emperors (Apaturinae)

Hackberry Emperor (Asterocampa celtis)

Satyrs and Wood-Nymphs (Satyrinae)

Canyonland Satyr (Cyllopsis pertepida)
Common Ringlet (Coenonympha tullia)
Common Wood Nymph (Cercyonis pegala)
Mead’s Wood Nymph (Cercyonis meadii)
Small Wood Nymph (Cercyonis oetus)
Magdalena Alpine (Erebia magdalena)
Eyed Brown (Satyrodes-eurydice)
Yellow-dotted Alpine (Erebia pawlowskii)
Colorado Alpine (Erebia callias)
Common Alpine (Erebia epipsodea)
Ridings’ Satyr (Neominois ridingsii)
Wyoming Satyr (Neominois wyomingo)
Polixenes Arctic (Oeneis polixenes)
Jutta Arctic (Oeneis jutta)
Melissa Arctic (Oeneis melissa)
Chryxus Arctic (Oeneis chryxus)
Alberta Arctic (Oeneis alberta)
Uhler’s Arctic (Oeneis uhleri)


Skippers (Hesperiidae)

Spread-wing Skippers (Pyrginae)

Silver-spotted Skipper (Epargyreus clarus)
Northern Cloudywing (Thorybes pylades)
Mexican Cloudywing (Thorybes mexicana)
Dreamy Duskywing (Erynnis icelus)
Sleepy Duskywing (Erynnis brizo)
Rocky Mountain Duskywing (Erynnis telemachus)
Horace’s Duskywing (Erynnis horatius
Mottled Duskywing (Erynnis martialis)
Pacuvius Duskywing (Erynnis pacuvius)
Funereal Duskywing (Erynnis funeralis)
Afranius Duskywing (Erynnis afranius)
Persius Duskywing (Erynnis persius)
Grizzled Skipper (Pyrgus centaureae)
Two-banded Checkered-Skipper (Pyrgus ruralis)
Mountain Checkered-Skipper (Pyrgus xanthus)
Small Checkered-Skipper (Pyrgus scriptura)
Common Checkered-Skipper (Pyrgus communis)
Common Sootywing (Pholisora catullus)
Mexican Sootywing (Pholisora mejicanus)

Grass Skippers (Hesperiinae)

Russet Skipperling(Piruna pirus)
Least Skipper (Ancyloxypha numitor)
Garita Skipperling (Oarisma garita)
Morrison’s Skipper (Stinga morrisoni)
Uncas Skipper (Hesperia uncas)
Juba Skipper (Hesperia juba)
Western Branded Skipper (Hesperia colorado)
Ottoe Skipper (Hesperia ottoe)
Leonard’s Skipper (Hesperia leonardus)
Pahaska Skipper (Hesperia pahaska)
Green Skipper (Hesperia viridis)
Nevada Skipper (Hesperia nevada)
Fiery Skipper (Hylephila phyleus)
Sachem (Atalopedes campestris)
Rhesus Skipper (Polites rhesus)
Peck’s Skipper (Polites peckius)
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)
Taxiles Skipper (Poanes taxiles)
Snow’s Skipper (Paratrytone snowi)
Two-spotted Skipper (Euphyes bimacula)
Dun Skipper (Euphyes vestris)
Dusted Skipper (Atrytonopsis hianna)
Bronze Roadside-Skipper (Amblyscirtes aenus)
Oslar’s Roadside-Skipper (Amblyscirtes oslari)
Dotted Roadside Skipper(Amblyscirtes eos)
Common Roadside-Skipper (Amblyscirtes vialis)
Orange-headed Roadside-Skipper (Amblyscirtes phylace)
Simius Roadside Skipper(Amblyscirtes simius)


GIANT-SKIPPERS  (Megathyminae)

Yucca Giant-Skipper(Megathymus yuccae)
Strecker’s Giant-Skipper(Megathymus strickeri)