List of U.S. Butterfly-Moths
| Common Name | Scientific Name | Family | Family Common Names |
|---|---|---|---|
| "Tulcis Crescent | Phyciodes tulcis | Nymphalidae | Brush-footed |
| 'Adjutrix' Bordered Patch | Chlosyne lacinia adjutrix | Nymphalidae | Brush-footed |
| 'Alexiares' Eastern Tiger Swallowtail | Papilio glaucus alexiares | Papilionidae | Swallowtails |
| 'Alpine' Sheridan's Hairstreak | Callophrys sheridani lemberti | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Androcardia' Southern Pearly Eye | Enodia portlandia androcardia | Nymphalidae | Brush-footed |
| 'Anicia' Variable Checkerspot | Euphydryas chalcedona anicia | Nymphalidae | Brush-footed |
| 'Astyanax' Red-spotted Purple | Limenitis [Basilarchia] arthemis astyanax | Nymphalidae | Brush-footed |
| 'Bachmanni' American Snout | Libytheana carinenta bachmanni | Nymphalidae | Brush-footed |
| 'Bernardino' Square-spotted Blue | Euphilotes battoides bernardino | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'California' Chryxus Arctic | Oeneis chryxus ivallda | Nymphalidae | Brush-footed |
| 'California' Common Ringlet | Coenonympha tullia california | Nymphalidae | Brush-footed |
| 'Chalcedon' Variable Checkerspot | Euphydryas chalcedona chalcedona | Nymphalidae | Brush-footed |
| 'Chisos' Nais Metalmark | Apodemia nais chisosensis | Riodinidae | MetalMarks |
| 'Colon' Variable Checkerspot | Euphydryas chalcedona colon | Nymphalidae | Brush-footed |
| 'Common' Common Checkered-Skipper | Pyrgus communis communis | Hesperiidae | Skippers |
| 'Desert' Sheridan's Hairstreak | Callophrys sheridani comstocki (incl. paradoxa) | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Favonius' Southern Oak Hairstreak | Fixsenia favonius favonius | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Freeman's' Rawson's Metalmark | Calephelis rawsoni freemani | Riodinidae | MetalMarks |
| 'Henshaw's' Nabokov's Satyr | Cyllopsis pyracmon henshawi | Nymphalidae | Brush-footed |
| 'Hesperis' Atlantis Fritillary | Speyeria atlantis hesperis (and allies) (unsilvered) | Nymphalidae | Brush-footed |
| 'Inornate' Common Ringlet | Coenonympha tullia inornata (incl. eunomia) | Nymphalidae | Brush-footed |
| 'Loki' Juniper Hairstreak | Callophrys [Mitoura] gryneus loki | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Loki' Juniper Hairstreak | Callophrys [Mitoura] gryneus loki COMPLEX | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Mazai' Delaware Skipper | Atrytone logan mazai | Hesperiidae | Skippers |
| 'McNeil's' Saltbush Sootywing | Hesperopsis alpheus gracielae | Hesperiidae | Skippers |
| 'Missarkae' Southern Pearly Eye | Enodia portlandia missarkae | Nymphalidae | Brush-footed |
| 'Mojave' Dotted Blue | Euphilotes enoptes mojave | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Muir's' Juniper Hairstreak | Callophrys [Mitoura] muiri | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Nigrosuffusa' Buckeye | Junonia nigrosuffusa (species affiliation still uncertain) | Nymphalidae | Brush-footed |
| 'Northwest' Common Ringlet | Coenonympha tullia ampelos (incl. mono) | Nymphalidae | Brush-footed |
| 'Ochre' Common Ringlet | Coenonympha tullia ochracea | Nymphalidae | Brush-footed |
| 'Ontario' Southern Oak Hairstreak | Fixsenia favonius ontario | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Sinaloensis' Rawson's Metalmark | Calephelis rawsoni sinaloensis | Riodinidae | MetalMarks |
| 'Siva' Juniper Hairstreak | Callophrys [Mitoura] gryneus siva | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Sylvan' Green Comma | Polygonia faunus silvius | Nymphalidae | Brush-footed |
| 'Thorne's' Juniper Hairstreak | Callophrys [Mitoura] gryneus thornei | Lycaenidae | Blues, Hairstreaks, Coppers |
| 'Trebius' Fawn-spotted Skipper | Cymaenes odilia trebius | Hesperiidae | Skippers |
| 'Tyrtaeus' Violet-patched Skipper | Monca telata tyrtaeus | Hesperiidae | Skippers |
| 'White' Common Checkered-Skipper | Pyrgus communis albescens | Hesperiidae | Skippers |
| Aaron's Skipper | Poanes aaroni | Hesperiidae | Skippers |
| Acacia Skipper | Cogia hippalus (incl. hiska) | Hesperiidae | Skippers |
| Acadian Hairstreak | Satyrium acadica | Lycaenidae | Blues, Hairstreaks, Coppers |
| Acmon Blue | Plebejus [Icaricia] acmon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Afranius Duskywing | Erynnis afranius | Hesperiidae | Skippers |
| Alberta Arctic | Oeneis alberta | Nymphalidae | Brush-footed |
| Alberta Fritillary | Boloria alberta | Nymphalidae | Brush-footed |
| Alkali Skipper | Pseudocopaeodes eunus | Hesperiidae | Skippers |
| American Copper | Lycaena phlaeas | Lycaenidae | Blues, Hairstreaks, Coppers |
| American Lady | Vanessa virginiensis | Nymphalidae | Brush-footed |
| American Snout | Libytheana carinenta COMPLEX (incl. bachmanii) | Nymphalidae | Brush-footed |
| Amethyst Hairstreak | Chlorostrymon maesites | Lycaenidae | Blues, Hairstreaks, Coppers |
| Androgeus Swallowtail | Papilio androgeus | Papilionidae | Swallowtails |
| Angled Leafwing | Anaea glycerium | Nymphalidae | Brush-footed |
| Anise Swallowtail | Papilio zelicaon (incl. nitra) | Papilionidae | Swallowtails |
| Antillean Daggerwing | Marpesia eleuchea | Nymphalidae | Brush-footed |
| Apache Skipper | Hesperia woodgatei | Hesperiidae | Skippers |
| Aphrodite Fritillary | Speyeria aphrodite | Nymphalidae | Brush-footed |
| Appalachian Azure | Celastrina neglecta-major (incl. Colorado undescribed entity) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Appalachian Brown | Satyrodes appalachia | Nymphalidae | Brush-footed |
| Apricot Sulphur | Phoebis argante | Pieridae | Yellow, Whites |
| Aquamarine Hairstreak | Oenomaus ortygnus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Arachne Checkerspot | Poladryas arachne | Nymphalidae | Brush-footed |
| Arctic Blue | Agriades glandon COMPLEX (incl. aquilo, franklinii, rusticus, podarce) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Arctic Skipper | Carterocephalus palaemon | Hesperiidae | Skippers |
| Ares Metalmark | Emesis ares | Riodinidae | MetalMarks |
| Arizona Giant-Skipper | Agathymus aryxna COMPLEX (incl. baueri) | Hesperiidae | Skippers |
| Arizona Hairstreak | Erora quaderna | Lycaenidae | Blues, Hairstreaks, Coppers |
| Arizona Metalmark | Calephelis arizonensis | Riodinidae | MetalMarks |
| Arizona Powdered Skipper | Systasea zampa (=evansi) | Hesperiidae | Skippers |
| Arizona Skipper | Codatractus arizonensis | Hesperiidae | Skippers |
| Arogos Skipper | Atrytone arogos | Hesperiidae | Skippers |
| Arrowhead Blue | Glaucopsyche piasus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Astarte Fritillary | Boloria astarte | Nymphalidae | Brush-footed |
| Atala | Eumaeus atala | Lycaenidae | Blues, Hairstreaks, Coppers |
| Atlantis Fritillary | Speyeria atlantis | Nymphalidae | Brush-footed |
| Atlantis Fritillary | Speyeria atlantis COMPLEX | Nymphalidae | Brush-footed |
| Avalon Scrub-Hairstreak | Strymon avalona | Lycaenidae | Blues, Hairstreaks, Coppers |
| Aztec Scallopwing | Staphylus azteca | Hesperiidae | Skippers |
| Bahaman Swallowtail | Papilio andraemon (ssp. bonhotei) | Papilionidae | Swallowtails |
| Baltimore | Euphydryas phaeton | Nymphalidae | Brush-footed |
| Banded Hairstreak | Satyrium calanus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Banded Orange Heliconian | Dryadula phaetusa (incl. stupenda) | Nymphalidae | Brush-footed |
| Banded Patch | Chlosyne endeis (incl. pardelina) | Nymphalidae | Brush-footed |
| Banded Peacock | Anartia fatima | Nymphalidae | Brush-footed |
| Baracoa Skipper | Polites baracoa | Hesperiidae | Skippers |
| Barred Yellow | Eurema daira | Pieridae | Yellow, Whites |
| Barry's Hairstreak | Callophrys [Mitoura] barryi | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bartram's Scrub-Hairstreak | Strymon acis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bay Skipper | Euphyes bayensis | Hesperiidae | Skippers |
| Becker's White | Pontia beckerii | Pieridae | Yellow, Whites |
| Behr's Hairstreak | Satyrium behrii | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bell's Roadside-Skipper | Amblyscirtes belli | Hesperiidae | Skippers |
| Berry's Skipper | Euphyes berryi | Hesperiidae | Skippers |
| Black Checkerspot | Thessalia cyneas | Nymphalidae | Brush-footed |
| Black Crescent | Phyciodes ptolyca | Nymphalidae | Brush-footed |
| Black Dash | Euphyes conspicua | Hesperiidae | Skippers |
| Black Hairstreak | Ocaria ocrisia | Lycaenidae | Blues, Hairstreaks, Coppers |
| Black Swallowtail | Papilio polyxenes | Papilionidae | Swallowtails |
| Black-patched Cracker | Hamadryas atlantis | Nymphalidae | Brush-footed |
| Blackened Bluewing | Myscelia cyananthe (incl. skinneri and streckeri) | Nymphalidae | Brush-footed |
| Blomfild's Beauty | Smyrna blomfildia | Nymphalidae | Brush-footed |
| Blue Copper | Lycaena heteronea | Lycaenidae | Blues, Hairstreaks, Coppers |
| Blue Flasher | Astraptes fulgerator (incl. azul) | Hesperiidae | Skippers |
| Blue Metalmark | Lasaia sula | Riodinidae | MetalMarks |
| Blue-eyed Sailor | Dynamine dyonis | Nymphalidae | Brush-footed |
| Blue-studded Skipper | Sostrata bifasciata | Hesperiidae | Skippers |
| Bog Copper | Lycaena epixanthe | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bog Elfin | Callophrys [Incisalia] lanoraieensis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bog Fritillary | Boloria eunomia | Nymphalidae | Brush-footed |
| Boisduval's Blue | Plebejus [Icaricia] icarioides | Lycaenidae | Blues, Hairstreaks, Coppers |
| Boisduval's Yellow | Eurema boisduvaliana | Pieridae | Yellow, Whites |
| Bordered Patch | Chlosyne lacinia | Nymphalidae | Brush-footed |
| Bramble Green Hairstreak | Callophrys affinis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Brazilian Skipper | Calpodes ethlius | Hesperiidae | Skippers |
| Broad-banded Swallowtail | Papilio astyalus | Papilionidae | Swallowtails |
| Broad-winged Skipper | Poanes viator | Hesperiidae | Skippers |
| Broken Silverdrop | Epargyreus exadeus COMPLEX | Hesperiidae | Skippers |
| Bromeliad Scrub-Hairstreak | Strymon serapio | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bronze Copper | Lycaena hyllus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Bronze Roadside-Skipper | Amblyscirtes aenus (incl. erna) | Hesperiidae | Skippers |
| Brown Elfin | Callophrys [Incisalia] augustinus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Brown Longtail | Urbanus procne | Hesperiidae | Skippers |
| Brown-banded Skipper | Timochares ruptifasciatus | Hesperiidae | Skippers |
| Brownish Cracker | Hamadryas iphthime | Nymphalidae | Brush-footed |
| Byssus Skipper | Problema byssus | Hesperiidae | Skippers |
| Cabbage White | Pieris rapae | Pieridae | Yellow, Whites |
| Caicus Skipper | Cogia caicus | Hesperiidae | Skippers |
| California Crescent | Phyciodes orseis | Nymphalidae | Brush-footed |
| California Dogface | Colias [Zerene] eurydice | Pieridae | Yellow, Whites |
| California Giant-Skipper | Agathymus stephensi COMPLEX | Hesperiidae | Skippers |
| California Hairstreak | Satyrium californica | Lycaenidae | Blues, Hairstreaks, Coppers |
| California Patch | Chlosyne californica | Nymphalidae | Brush-footed |
| California Sister | Adelpha bredowii | Nymphalidae | Brush-footed |
| California Tortoiseshell | Nymphalis californica | Nymphalidae | Brush-footed |
| Callippe Fritillary | Speyeria callippe (incl. nevadensis) | Nymphalidae | Brush-footed |
| Canadian Tiger Swallowtail | Papilio canadensis | Papilionidae | Swallowtails |
| Canyonland Satyr | Cyllopsis pertepida | Nymphalidae | Brush-footed |
| Carolina Roadside-Skipper | Amblyscirtes carolina | Hesperiidae | Skippers |
| Carolina Satyr | Hermeuptychia sosybius (=hermes) | Nymphalidae | Brush-footed |
| Carus Skipper | Polites carus (incl. subreticulata) | Hesperiidae | Skippers |
| Cassius Blue | Leptotes cassius | Lycaenidae | Blues, Hairstreaks, Coppers |
| Cassus Roadside-Skipper | Amblyscirtes cassus | Hesperiidae | Skippers |
| Celia's Roadside-Skipper | Amblyscirtes celia | Hesperiidae | Skippers |
| Ceraunus Blue | Hemiargus ceraunus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Cestus Skipper | Atrytonopsis cestus | Hesperiidae | Skippers |
| Checkered White | Pontia protodice | Pieridae | Yellow, Whites |
| Chestnut Leafwing | Anaea echemus | Nymphalidae | Brush-footed |
| Chestnut-marked Skipper | Thespieus macareus | Hesperiidae | Skippers |
| Chinati Checkerspot | Thessalia chinatiensis | Nymphalidae | Brush-footed |
| Chiricahua White | Neophasia terlooti | Pieridae | Yellow, Whites |
| Chisos Banded-Skipper | Autochton cincta | Hesperiidae | Skippers |
| Chisos Skipperling | Piruna hafernicki | Hesperiidae | Skippers |
| Chryxus Arctic | Oeneis chryxus COMPLEX (excl. ivallda) | Nymphalidae | Brush-footed |
| Clench's Greenstreak | Cyanophrys miserabilis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Clodius Parnassian | Parnassius clodius | Papilionidae | Swallowtails |
| Clouded Skipper | Lerema accius | Hesperiidae | Skippers |
| Clouded Sulphur | Colias philodice | Pieridae | Yellow, Whites |
| Cloudless Sulphur | Phoebis sennae | Pieridae | Yellow, Whites |
| Clytie Ministreak | Ministrymon clytie | Lycaenidae | Blues, Hairstreaks, Coppers |
| Coahuila Giant-Skipper | Agathymus remingtoni COMPLEX (incl. Estellae and fieldi) | Hesperiidae | Skippers |
| Coastal Green Hairstreak | Callophrys dumetorum (=viridis) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Cobweb Skipper | Hesperia metea | Hesperiidae | Skippers |
| Cofaqui Giant-Skipper | Megathymus cofaqui | Hesperiidae | Skippers |
| Colorado Alpine | Erebia callias | Nymphalidae | Brush-footed |
| Colorado Hairstreak | Hypaurotis crysalus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Columbian Skipper | Hesperia columbia | Hesperiidae | Skippers |
| Columbine Duskywing | Erynnis lucilius | Hesperiidae | Skippers |
| Common Alpine | Erebia epipsodea | Nymphalidae | Brush-footed |
| Common Banner | Epiphile adrasta | Nymphalidae | Brush-footed |
| Common Branded Skipper | Hesperia comma | Hesperiidae | Skippers |
| Common Branded Skipper | Hesperia comma COMPLEX | Hesperiidae | Skippers |
| Common Buckeye | Junonia coenia | Nymphalidae | Brush-footed |
| Common Checkered-Skipper | Pyrgus communis | Hesperiidae | Skippers |
| Common Checkered-Skipper | Pyrgus communis COMPLEX | Hesperiidae | Skippers |
| Common Mestra | Mestra amymone | Nymphalidae | Brush-footed |
| Common Ringlet | Coenonympha tullia | Nymphalidae | Brush-footed |
| Common Ringlet | Coenonympha tullia COMPLEX | Nymphalidae | Brush-footed |
| Common Roadside-Skipper | Amblyscirtes vialis | Hesperiidae | Skippers |
| Common Sootywing | Pholisora catullus | Hesperiidae | Skippers |
| Common Streaky-Skipper | Celotes nessus | Hesperiidae | Skippers |
| Common Wood Nymph | Cercyonis pegala | Nymphalidae | Brush-footed |
| Compton Tortoiseshell | Nymphalis vau-album | Nymphalidae | Brush-footed |
| Confused Cloudywing | Thorybes confusis | Hesperiidae | Skippers |
| Confused Pellicia | Pellicia angra | Hesperiidae | Skippers |
| Coral Hairstreak | Satyrium [Harkenclenus] titus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Coronis Fritillary | Speyeria coronis | Nymphalidae | Brush-footed |
| Costa-spotted Mimic-White | Enantia albania (=melite) | Pieridae | Yellow, Whites |
| Coyote Cloudywing | Achalarus toxeus | Hesperiidae | Skippers |
| Cramer's Eighty-eight | Diaethria clymena | Nymphalidae | Brush-footed |
| Creamy Stripe-streak | Arawacus [Dolymorpha] jada | Lycaenidae | Blues, Hairstreaks, Coppers |
| Creole Pearly Eye | Enodia creola | Nymphalidae | Brush-footed |
| Crescent Metalmark | Apodemia phyciodoides | Riodinidae | MetalMarks |
| Crimson Patch | Chlosyne janais | Nymphalidae | Brush-footed |
| Crossline Skipper | Polites origenes | Hesperiidae | Skippers |
| Cuban Crescent | Phyciodes frisia | Nymphalidae | Brush-footed |
| Curve-winged Metalmark | Emesis emesia | Riodinidae | MetalMarks |
| Cyna Blue | Zizula cyna | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dainty Sulphur | Nathalis iole | Pieridae | Yellow, Whites |
| Dakota Skipper | Hesperia dacotae | Hesperiidae | Skippers |
| Dark Kite-Swallowtail | Eurytides philolaus | Papilionidae | Swallowtails |
| Definite Patch | Chlosyne definita (incl. anastasia) | Nymphalidae | Brush-footed |
| Delaware Skipper | Atrytone logan (=delaware) | Hesperiidae | Skippers |
| Desert Checkered-Skipper | Pyrgus philetas | Hesperiidae | Skippers |
| Desert Cloudywing | Achalarus casica | Hesperiidae | Skippers |
| Desert Elfin | Callophrys [Incisalia] fotis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Deva Skipper | Atrytonopsis deva | Hesperiidae | Skippers |
| Diana | Speyeria diana | Nymphalidae | Brush-footed |
| Dina Yellow | Eurema dina | Pieridae | Yellow, Whites |
| Dingy Fritillary | Boloria improba (incl. acrocnema) | Nymphalidae | Brush-footed |
| Dingy Purplewing | Eunica monima | Nymphalidae | Brush-footed |
| Dion Skipper | Euphyes dion | Hesperiidae | Skippers |
| Dion Skipper | Euphyes dion (incl. macguirei) | Hesperiidae | Skippers |
| Dion Skipper | Euphyes dion (ssp. alabamae) | Hesperiidae | Skippers |
| Disa Alpine | Erebia disa | Nymphalidae | Brush-footed |
| Disguised Scrub-Hairstreak | Strymon limenia | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dorantes Longtail | Urbanus dorantes | Hesperiidae | Skippers |
| Dorcas Copper | Lycaena dorcas (sensu Ferris) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dotted Blue | Euphilotes enoptes (fall-flying) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dotted Blue | Euphilotes enoptes (spring-flying) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dotted Checkerspot | Poladryas minuta | Nymphalidae | Brush-footed |
| Dotted Checkerspot | Poladryas minuta COMPLEX | Nymphalidae | Brush-footed |
| Dotted Roadside-Skipper | Amblyscirtes eos | Hesperiidae | Skippers |
| Dotted Skipper | Hesperia attalus | Hesperiidae | Skippers |
| Double-dotted Skipper | Decinea percosius | Hesperiidae | Skippers |
| Draco Skipper | Polites draco | Hesperiidae | Skippers |
| Dreamy Duskywing | Erynnis icelus | Hesperiidae | Skippers |
| Drusius Cloudywing | Thorybes drusius | Hesperiidae | Skippers |
| Dukes' Skipper | Euphyes dukesi | Hesperiidae | Skippers |
| Dull Firetip | Pyrrhopyge araxes | Hesperiidae | Skippers |
| Dun Skipper | Euphyes vestris (=ruricola) | Hesperiidae | Skippers |
| Dusky Azure | Celastrina nigra (=ebenina) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dusky Emperor | Asterocampa idyja (incl. argus) | Nymphalidae | Brush-footed |
| Dusky Roadside-Skipper | Amblyscirtes alternata | Hesperiidae | Skippers |
| Dusky-blue Groundstreak | Calycopis isobeon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Dusted Skipper | Atrytonopsis hianna (incl. loammi) | Hesperiidae | Skippers |
| Early Hairstreak | Erora laeta | Lycaenidae | Blues, Hairstreaks, Coppers |
| Eastern Comma | Polygonia comma | Nymphalidae | Brush-footed |
| Eastern Pine Elfin | Callophrys [Incisalia] niphon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Eastern Pygmy-Blue | Brephidium isophthalma | Lycaenidae | Blues, Hairstreaks, Coppers |
| Eastern Tailed-Blue | Everes comyntas | Lycaenidae | Blues, Hairstreaks, Coppers |
| Eastern Tiger Swallowtail | Papilio glaucus | Papilionidae | Swallowtails |
| Eastern Tiger Swallowtail | Papilio glaucus (incl. canadensis) | Papilionidae | Swallowtails |
| Edith's Checkerspot | Euphydryas editha | Nymphalidae | Brush-footed |
| Edith's Copper | Lycaena editha | Lycaenidae | Blues, Hairstreaks, Coppers |
| Edwards' Fritillary | Speyeria edwardsii | Nymphalidae | Brush-footed |
| Edwards' Hairstreak | Satyrium edwardsii | Lycaenidae | Blues, Hairstreaks, Coppers |
| Edwards' Skipperling | Oarisma edwardsii | Hesperiidae | Skippers |
| Eight-spotted Longtail | Polythrix octomaculata | Hesperiidae | Skippers |
| Elada Checkerspot | Texola elada | Nymphalidae | Brush-footed |
| Elf | Microtia elva | Nymphalidae | Brush-footed |
| Elissa Roadside-Skipper | Amblyscirtes elissa | Hesperiidae | Skippers |
| Emerald Aguna | Aguna claxon | Hesperiidae | Skippers |
| Empress Leilia | Asterocampa leilia | Nymphalidae | Brush-footed |
| Erato Heliconian | Heliconius erato | Nymphalidae | Brush-footed |
| Erichson's White-Skipper | Heliopetes domicella | Hesperiidae | Skippers |
| Esmeralda Longtail | Urbanus esmeraldus | Hesperiidae | Skippers |
| Eufala Skipper | Lerodea eufala | Hesperiidae | Skippers |
| European Peacock | Inachis io | Nymphalidae | Brush-footed |
| European Skipper | Thymelicus lineola | Hesperiidae | Skippers |
| Evans' Skipper | Panoquina fusina evansi | Hesperiidae | Skippers |
| Eyed Brown | Satyrodes eurydice (incl. fumosus) | Nymphalidae | Brush-footed |
| Faceted Skipper | Synapte syraces (incl. shiva) | Hesperiidae | Skippers |
| Falcate Metalmark | Emesis tenedia | Riodinidae | MetalMarks |
| Falcate Orangetip | Anthocharis midea | Pieridae | Yellow, Whites |
| Falcate Skipper | Spathilepia clonius | Hesperiidae | Skippers |
| False Duskywing | Gesta gesta | Hesperiidae | Skippers |
| Fantastic Skipper | Vettius fantasos | Hesperiidae | Skippers |
| Fatal Metalmark | Calephelis nemesis (incl. guadeloupe) | Riodinidae | MetalMarks |
| Felder's Orangetip | Anthocharis cethura | Pieridae | Yellow, Whites |
| Field Crescent | Phyciodes campestris (=pratensis) | Nymphalidae | Brush-footed |
| Fiery Skipper | Hylephila phyleus | Hesperiidae | Skippers |
| Florida Duskywing | Ephyriades brunneus | Hesperiidae | Skippers |
| Florida Leafwing | Anaea floridalis | Nymphalidae | Brush-footed |
| Florida Purplewing | Eunica tatila | Nymphalidae | Brush-footed |
| Florida White | Appias drusilla | Pieridae | Yellow, Whites |
| Four-spotted Skipperling | Piruna polingi | Hesperiidae | Skippers |
| Freija Fritillary | Boloria freija | Nymphalidae | Brush-footed |
| Frigga Fritillary | Boloria frigga | Nymphalidae | Brush-footed |
| Fritzgaertner's Flat | Celaenorrhinus fritzgaertneri | Hesperiidae | Skippers |
| Frosted Elfin | Callophrys [Incisalia] irus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Frosted Flasher | Astraptes alardus (incl. grullus) | Hesperiidae | Skippers |
| Fulvia Checkerspot | Thessalia fulvia | Nymphalidae | Brush-footed |
| Fulvous Hairstreak | Electrostrymon angelia | Lycaenidae | Blues, Hairstreaks, Coppers |
| Funereal Duskywing | Erynnis funeralis | Hesperiidae | Skippers |
| Gabb's Checkerspot | Chlosyne gabbii | Nymphalidae | Brush-footed |
| Garita Skipperling | Oarisma garita | Hesperiidae | Skippers |
| Gemmed Satyr | Cyllopsis gemma | Nymphalidae | Brush-footed |
| Georgia Satyr | Neonympha areolata | Nymphalidae | Brush-footed |
| Giant Sulphur | Colias gigantea | Pieridae | Yellow, Whites |
| Giant Swallowtail | Papilio cresphontes | Papilionidae | Swallowtails |
| Giant White | Ganyra josephina | Pieridae | Yellow, Whites |
| Gilbert's Flasher | Astraptes gilberti | Hesperiidae | Skippers |
| Gillette's Checkerspot | Euphydryas gillettii | Nymphalidae | Brush-footed |
| Glassy-winged Skipper | Xenophanes tryxus (=trixus) | Hesperiidae | Skippers |
| Glaucous Cracker | Hamadryas glauconome | Nymphalidae | Brush-footed |
| Glazed Pellicia | Pellicia arina | Hesperiidae | Skippers |
| Goatweed Leafwing | Anaea andria | Nymphalidae | Brush-footed |
| Gold-bordered Hairstreak | Rekoa palegon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Gold-hunter's Hairstreak | Satyrium auretorum | Lycaenidae | Blues, Hairstreaks, Coppers |
| Gold-spotted Aguna | Aguna asander | Hesperiidae | Skippers |
| Golden Hairstreak | Habrodais grunus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Golden-banded Skipper | Autochton cellus | Hesperiidae | Skippers |
| Golden-headed Scallopwing | Staphylus ceos | Hesperiidae | Skippers |
| Goodson's Greenstreak | Cyanophrys goodsoni | Lycaenidae | Blues, Hairstreaks, Coppers |
| Gorgon Copper | Lycaena gorgon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Gorgone Checkerspot | Chlosyne gorgone | Nymphalidae | Brush-footed |
| Gray Comma | Polygonia progne | Nymphalidae | Brush-footed |
| Gray Comma | Polygonia progne (strict sense) | Nymphalidae | Brush-footed |
| Gray Copper | Lycaena dione | Lycaenidae | Blues, Hairstreaks, Coppers |
| Gray Cracker | Hamadryas februa | Nymphalidae | Brush-footed |
| Gray Hairstreak | Strymon melinus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Gray Marble | Anthocharis lanceolata | Pieridae | Yellow, Whites |
| Gray Ministreak | Ministrymon [Tmolus] azia | Lycaenidae | Blues, Hairstreaks, Coppers |
| Great Arctic | Oeneis nevadensis | Nymphalidae | Brush-footed |
| Great Basin Fritillary | Speyeria egleis | Nymphalidae | Brush-footed |
| Great Basin Wood Nymph | Cercyonis sthenele (incl. sylvestris) | Nymphalidae | Brush-footed |
| Great Copper | Lycaena xanthoides | Lycaenidae | Blues, Hairstreaks, Coppers |
| Great Copper | Lycaena xanthoides COMPLEX (excl. editha) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Great Purple Hairstreak | Atlides halesus (incl. gaumeri, polybe, carpasia) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Great Southern White | Ascia monuste | Pieridae | Yellow, Whites |
| Great Spangled Fritillary | Speyeria cybele | Nymphalidae | Brush-footed |
| Great Spangled Fritillary | Speyeria cybele (incl. leto) | Nymphalidae | Brush-footed |
| Green Comma | Polygonia faunus | Nymphalidae | Brush-footed |
| Green Comma | Polygonia faunus COMPLEX (incl. hylas and silvius) | Nymphalidae | Brush-footed |
| Green Skipper | Hesperia viridis | Hesperiidae | Skippers |
| Green-backed Ruby-eye | Perichares philetes | Hesperiidae | Skippers |
| Greenish Blue | Plebejus saepiolus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Grizzled Skipper | Pyrgus centaureae | Hesperiidae | Skippers |
| Guatemalan Cracker | Hamadryas guatemalena | Nymphalidae | Brush-footed |
| Guava Skipper | Phocides palemon | Hesperiidae | Skippers |
| Gulf Fritillary | Agraulis [Dione] vanillae | Nymphalidae | Brush-footed |
| Hackberry Emperor | Asterocampa celtis | Nymphalidae | Brush-footed |
| Hackberry Emperor | Asterocampa celtis (ssp. alicia) | Nymphalidae | Brush-footed |
| Hackberry Emperor | Asterocampa celtis COMPLEX | Nymphalidae | Brush-footed |
| Hammock Skipper | Polygonus leo (=lividus) | Hesperiidae | Skippers |
| Harford's Sulphur | Colias harfordii | Pieridae | Yellow, Whites |
| Harris' Checkerspot | Chlosyne harrisii | Nymphalidae | Brush-footed |
| Harvester | Feniseca tarquinius | Lycaenidae | Blues, Hairstreaks, Coppers |
| Hayden's Ringlet | Coenonympha haydenii | Nymphalidae | Brush-footed |
| Hayhurst's Scallopwing | Staphylus hayhurstii | Hesperiidae | Skippers |
| Hecebolus Skipper | Panoquina hecebola | Hesperiidae | Skippers |
| Hedgerow Hairstreak | Satyrium saepium | Lycaenidae | Blues, Hairstreaks, Coppers |
| Henry's Elfin | Callophrys [Incisalia] henrici | Lycaenidae | Blues, Hairstreaks, Coppers |
| Hepburn's Metalmark | Apodemia hepburni | Riodinidae | MetalMarks |
| Hermes Copper | Lycaena [Hermelycaena] hermes | Lycaenidae | Blues, Hairstreaks, Coppers |
| Hermit Skipper | Grais stigmatica | Hesperiidae | Skippers |
| Hessel's Hairstreak | Callophrys [Mitoura] hesseli | Lycaenidae | Blues, Hairstreaks, Coppers |
| Hickory Hairstreak | Satyrium caryaevorum | Lycaenidae | Blues, Hairstreaks, Coppers |
| Hidden-ray Skipper | Conga chydaea | Hesperiidae | Skippers |
| Hoary Comma | Polygonia gracilis (incl. zephyrus) | Nymphalidae | Brush-footed |
| Hoary Edge | Achalarus lyciades | Hesperiidae | Skippers |
| Hoary Elfin | Callophrys [Incisalia] polios | Lycaenidae | Blues, Hairstreaks, Coppers |
| Hoary Skipper | Carrhenes canescens | Hesperiidae | Skippers |
| Hobomok Skipper | Poanes hobomok | Hesperiidae | Skippers |
| Hoffmann's Checkerspot | Chlosyne hoffmanni | Nymphalidae | Brush-footed |
| Horace's Duskywing | Erynnis horatius | Hesperiidae | Skippers |
| Huachuca Giant-Skipper | Agathymus evansi COMPLEX | Hesperiidae | Skippers |
| Hydaspe Fritillary | Speyeria hydaspe | Nymphalidae | Brush-footed |
| Ilavia Hairstreak | Satyrium ilavia | Lycaenidae | Blues, Hairstreaks, Coppers |
| Indian Skipper | Hesperia sassacus | Hesperiidae | Skippers |
| Indra Swallowtail | Papilio indra | Papilionidae | Swallowtails |
| Isabella's Heliconian | Eueides isabella (=cleobaea) | Nymphalidae | Brush-footed |
| Jalapus Cloudywing | Achalarus [Thessia] jalapus | Hesperiidae | Skippers |
| Johnson's Hairstreak | Callophrys [Mitoura] johnsoni | Lycaenidae | Blues, Hairstreaks, Coppers |
| Juba Skipper | Hesperia juba | Hesperiidae | Skippers |
| Julia | Dryas iulia (=julia) | Nymphalidae | Brush-footed |
| Julia's Skipper | Nastra julia | Hesperiidae | Skippers |
| Juniper Hairstreak | Callophrys [Mitoura] gryneus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Jutta Arctic | Oeneis jutta | Nymphalidae | Brush-footed |
| Juvenal's Duskywing | Erynnis juvenalis | Hesperiidae | Skippers |
| Karwinski's Beauty | Smyrna karwinskii | Nymphalidae | Brush-footed |
| King's Hairstreak | Satyrium kingi | Lycaenidae | Blues, Hairstreaks, Coppers |
| Klug's Clearwing | Dircenna klugii | Nymphalidae | Brush-footed |
| Labrador Sulphur | Colias nastes | Pieridae | Yellow, Whites |
| Lace-winged Roadside-Skipper | Amblyscirtes aesculapius | Hesperiidae | Skippers |
| Lacey's Scrub-Hairstreak | Strymon alea | Lycaenidae | Blues, Hairstreaks, Coppers |
| Lantana Scrub-Hairstreak | Strymon bazochii | Lycaenidae | Blues, Hairstreaks, Coppers |
| Large Marble | Euchloe ausonides | Pieridae | Yellow, Whites |
| Large Orange Sulphur | Phoebis agarithe | Pieridae | Yellow, Whites |
| Large Roadside-Skipper | Amblyscirtes exoteria | Hesperiidae | Skippers |
| Large White | Pieris brassicae | Pieridae | Yellow, Whites |
| Laviana White-Skipper | Heliopetes laviana | Hesperiidae | Skippers |
| Leanira Checkerspot | Thessalia leanira (incl. alma) | Nymphalidae | Brush-footed |
| Least Skipper | Ancyloxypha numitor | Hesperiidae | Skippers |
| Leda Ministreak | Ministrymon leda (incl. ines) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Leonard's Skipper | Hesperia leonardus (incl. pawnee) | Hesperiidae | Skippers |
| Lilac-bordered Copper | Lycaena nivalis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Linda's Roadside-Skipper | Amblyscirtes linda | Hesperiidae | Skippers |
| Lindsey's Skipper | Hesperia lindseyi | Hesperiidae | Skippers |
| Liris Skipper | Lerema ancillaris (incl. liris) | Hesperiidae | Skippers |
| Little Glassywing | Pompeius verna | Hesperiidae | Skippers |
| Little Metalmark | Calephelis virginiensis | Riodinidae | MetalMarks |
| Little Wood Satyr | Megisto cymela | Nymphalidae | Brush-footed |
| Little Wood Satyr | Megisto cymela COMPLEX | Nymphalidae | Brush-footed |
| Little Yellow | Eurema lisa | Pieridae | Yellow, Whites |
| Long Dash | Polites mystic | Hesperiidae | Skippers |
| Long-tailed Skipper | Urbanus proteus | Hesperiidae | Skippers |
| Lorquin's Admiral | Limenitis [Basilarchia] lorquini | Nymphalidae | Brush-footed |
| Lupine Blue | Plebejus [Icaricia] lupinus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Lustrous Copper | Lycaena cupreus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Lyside Sulphur | Kricogonia lyside | Pieridae | Yellow, Whites |
| Macoun's Arctic | Oeneis macounii | Nymphalidae | Brush-footed |
| Magdalena Alpine | Erebia magdalena | Nymphalidae | Brush-footed |
| Malachite | Siproeta stelenes | Nymphalidae | Brush-footed |
| Malicious Skipper | Synapte malitiosa | Hesperiidae | Skippers |
| Mallow Scrub-Hairstreak | Strymon columella | Lycaenidae | Blues, Hairstreaks, Coppers |
| Manfreda Giant-Skipper | Stallingsia maculosa | Hesperiidae | Skippers |
| Mangrove | Phocides pigmalion | Hesperiidae | Skippers |
| Mangrove Buckeye | Junonia evarete (genoveva) (excl. nigrosuffusa) | Nymphalidae | Brush-footed |
| Manuel's Skipper | Polygonus manueli | Hesperiidae | Skippers |
| Many-banded Daggerwing | Marpesia chiron | Nymphalidae | Brush-footed |
| Many-spotted Skipperling | Piruna cingo (=mexicana) | Hesperiidae | Skippers |
| Mardon Skipper | Polites mardon | Hesperiidae | Skippers |
| Margined White | Pieris marginalis | Pieridae | Yellow, Whites |
| Marine Blue | Leptotes marina | Lycaenidae | Blues, Hairstreaks, Coppers |
| Mariposa Copper | Lycaena mariposa | Lycaenidae | Blues, Hairstreaks, Coppers |
| Marius Hairstreak | Rekoa marius (=brescia) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Martial Scrub-Hairstreak | Strymon martialis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Mary's Giant-Skipper | Agathymus mariae COMPLEX (incl. gilberti) | Hesperiidae | Skippers |
| Mazans Scallopwing | Staphylus mazans | Hesperiidae | Skippers |
| Mead's Sulphur | Colias meadii | Pieridae | Yellow, Whites |
| Mead's Wood Nymph | Cercyonis meadii | Nymphalidae | Brush-footed |
| Meadow Fritillary | Boloria bellona | Nymphalidae | Brush-footed |
| Melissa Arctic | Oeneis melissa | Nymphalidae | Brush-footed |
| Melissa Blue | Lycaeides melissa | Lycaenidae | Blues, Hairstreaks, Coppers |
| Mercurial Skipper | Proteides mercurius | Hesperiidae | Skippers |
| Meridian Duskywing | Erynnis meridianus | Hesperiidae | Skippers |
| Meske's Skipper | Hesperia meskei | Hesperiidae | Skippers |
| Mexican Bluewing | Myscelia ethusa | Nymphalidae | Brush-footed |
| Mexican Cloudywing | Thorybes mexicana | Hesperiidae | Skippers |
| Mexican Cycadian | Eumaeus toxea (=minijas) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Mexican Dartwhite | Catasticta nimbice | Pieridae | Yellow, Whites |
| Mexican Eighty-eight | Diaethria asteria | Nymphalidae | Brush-footed |
| Mexican Fritillary | Euptoieta hegesia | Nymphalidae | Brush-footed |
| Mexican Longtail | Polythrix mexicana (=asine) | Hesperiidae | Skippers |
| Mexican Mellana | Mellana eulogius | Hesperiidae | Skippers |
| Mexican Silverspot | Dione moneta | Nymphalidae | Brush-footed |
| Mexican Sister | Adelpha fessonia | Nymphalidae | Brush-footed |
| Mexican Sootywing | Pholisora mejicana | Hesperiidae | Skippers |
| Mexican Yellow | Eurema mexicana | Pieridae | Yellow, Whites |
| Miami Blue | Hemiargus thomasi | Lycaenidae | Blues, Hairstreaks, Coppers |
| Milbert's Tortoiseshell | Nymphalis [Aglais] milberti | Nymphalidae | Brush-footed |
| Mimic | Hypolimnas misippus | Nymphalidae | Brush-footed |
| Mimosa Skipper | Cogia calchas | Hesperiidae | Skippers |
| Mimosa Yellow | Eurema nise | Pieridae | Yellow, Whites |
| Mitchell's Satyr | Neonympha mitchellii | Nymphalidae | Brush-footed |
| Mohave Sootywing | Hesperopsis libya | Hesperiidae | Skippers |
| Mojave Giant-Skipper | Agathymus alliae | Hesperiidae | Skippers |
| Monarch | Danaus plexippus | Nymphalidae | Brush-footed |
| Monk | Asbolis capucinus | Hesperiidae | Skippers |
| Moon-marked Skipper | Atrytonopsis lunus | Hesperiidae | Skippers |
| Mormon Fritillary | Speyeria mormonia | Nymphalidae | Brush-footed |
| Mormon Metalmark | Apodemia mormo | Riodinidae | MetalMarks |
| Morning Glory Pellicia | Pellicia dimidiata | Hesperiidae | Skippers |
| Morrison's Skipper | Stinga morrisoni | Hesperiidae | Skippers |
| Moss' Elfin | Callophrys [Incisalia] mossii | Lycaenidae | Blues, Hairstreaks, Coppers |
| Mottled Bolla | Bolla clytius | Hesperiidae | Skippers |
| Mottled Duskywing | Erynnis martialis | Hesperiidae | Skippers |
| Mottled Longtail | Typhedanus undulatus | Hesperiidae | Skippers |
| Mountain Checkered-Skipper | Pyrgus xanthus | Hesperiidae | Skippers |
| Mountain Fritillary | Boloria napaea | Nymphalidae | Brush-footed |
| Mountain Mahogany Hairstreak | Satyrium tetra | Lycaenidae | Blues, Hairstreaks, Coppers |
| Mournful Duskywing | Erynnis tristis | Hesperiidae | Skippers |
| Mourning Cloak | Nymphalis antiopa | Nymphalidae | Brush-footed |
| Mulberry Wing | Poanes massasoit | Hesperiidae | Skippers |
| Mustard White | Pieris oleracea | Pieridae | Yellow, Whites |
| Mylitta Crescent | Phyciodes mylitta | Nymphalidae | Brush-footed |
| Nabokov's Satyr | Cyllopsis pyracmon | Nymphalidae | Brush-footed |
| Nais Metalmark | Apodemia nais | Riodinidae | MetalMarks |
| Narrow-winged Metalmark | Apodemia multiplaga | Riodinidae | MetalMarks |
| Neamathla Skipper | Nastra neamathla | Hesperiidae | Skippers |
| Nelson's Hairstreak | Callophrys [Mitoura] nelsoni | Lycaenidae | Blues, Hairstreaks, Coppers |
| Nelson's Hairstreak | Callophrys [Mitoura] nelsoni COMPLEX | Lycaenidae | Blues, Hairstreaks, Coppers |
| Nevada Skipper | Hesperia nevada | Hesperiidae | Skippers |
| No Common Name | Hamadryas fornax | Nymphalidae | Brush-footed |
| No Common Name | Historis acheronta | Nymphalidae | Brush-footed |
| No Common Name | Ganyra howarthi (=kuschei) | Pieridae | Yellow, Whites |
| No Common Name | Eurema chamberlaini | Pieridae | Yellow, Whites |
| No Common Name | Eurema albula | Pieridae | Yellow, Whites |
| No Common Name | Parides eurimedes (=arcas) | Papilionidae | Swallowtails |
| No Common Name | Mellana mexicana | Hesperiidae | Skippers |
| No Common Name | Callophrys [Mitoura] byrnei | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Callophrys affinis affinis | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Callophrys affinis apama | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Callophrys affinis perplexa | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Cyanophrys longula | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Diaethria anna | Nymphalidae | Brush-footed |
| No Common Name | Electrostrymon cyphara | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Electrostrymon endymion COMPLEX (incl. cyphara, autoclea, canus) | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Dynamine tithia | Nymphalidae | Brush-footed |
| No Common Name | Antigonus emorsus | Hesperiidae | Skippers |
| No Common Name | Anartia lytrea | Nymphalidae | Brush-footed |
| No Common Name | Phyciodes nebulosa (=alexon subconcolor) | Nymphalidae | Brush-footed |
| No Common Name | Phyciodes alethes | Nymphalidae | Brush-footed |
| No Common Name | Phyciodes anieta | Nymphalidae | Brush-footed |
| No Common Name | Phyciodes ardys (incl. subota) | Nymphalidae | Brush-footed |
| No Common Name | Philaethria dido | Nymphalidae | Brush-footed |
| No Common Name | Satyrium sylvinus dryope | Lycaenidae | Blues, Hairstreaks, Coppers |
| No Common Name | Siproeta epaphus | Nymphalidae | Brush-footed |
| No Common Name | Rekoa zebina | Lycaenidae | Blues, Hairstreaks, Coppers |
| Nogales Metalmark | Calephelis dreisbachi | Riodinidae | MetalMarks |
| Nokomis Fritillary | Speyeria nokomis | Nymphalidae | Brush-footed |
| Northern Blue | Lycaeides idas (=argyrognomon) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Northern Broken-Dash | Wallengrenia egeremet | Hesperiidae | Skippers |
| Northern Checkerspot | Chlosyne palla (incl. sterope) | Nymphalidae | Brush-footed |
| Northern Cloudywing | Thorybes pylades | Hesperiidae | Skippers |
| Northern Crescent | Phyciodes cocyta | Nymphalidae | Brush-footed |
| Northern Marble | Euchloe creusa | Pieridae | Yellow, Whites |
| Northern Metalmark | Calephelis borealis | Riodinidae | MetalMarks |
| Northern Pearly Eye | Enodia anthedon | Nymphalidae | Brush-footed |
| Northern White-Skipper | Heliopetes ericetorum | Hesperiidae | Skippers |
| Nysa Roadside-Skipper | Amblyscirtes nysa | Hesperiidae | Skippers |
| Obscure Bolla | Bolla brennus | Hesperiidae | Skippers |
| Obscure Skipper | Panoquina panoquinoides | Hesperiidae | Skippers |
| Ocola Skipper | Panoquina ocola | Hesperiidae | Skippers |
| Old World Swallowtail | Papilio machaon | Papilionidae | Swallowtails |
| Olive-clouded Skipper | Lerodea dysaules | Hesperiidae | Skippers |
| Olympia Marble | Euchloe olympia | Pieridae | Yellow, Whites |
| Orange Giant-Skipper | Agathymus neumoegeni COMPLEX (incl. chisosensis) | Hesperiidae | Skippers |
| Orange Skipperling | Copaeodes aurantiacus | Hesperiidae | Skippers |
| Orange Sulphur | Colias eurytheme | Pieridae | Yellow, Whites |
| Orange-barred Sulphur | Phoebis philea | Pieridae | Yellow, Whites |
| Orange-edged Roadside-Skipper | Amblyscirtes fimbriata | Hesperiidae | Skippers |
| Orange-headed Roadside-Skipper | Amblyscirtes phylace | Hesperiidae | Skippers |
| Orbed Sulphur | Phoebis orbis | Pieridae | Yellow, Whites |
| Oreas Comma | Polygonia oreas (incl. nigrozephyrus) | Nymphalidae | Brush-footed |
| Ornythion Swallowtail | Papilio ornythion | Papilionidae | Swallowtails |
| Osca Skipper | Rhinthon cubana osca | Hesperiidae | Skippers |
| Oslar's Roadside-Skipper | Amblyscirtes oslari | Hesperiidae | Skippers |
| Ottoe Skipper | Hesperia ottoe | Hesperiidae | Skippers |
| Outis Skipper | Cogia outis | Hesperiidae | Skippers |
| Pacific Fritillary | Boloria epithore | Nymphalidae | Brush-footed |
| Pacuvius Duskywing | Erynnis pacuvius | Hesperiidae | Skippers |
| Pahaska Skipper | Hesperia pahaska | Hesperiidae | Skippers |
| Painted Crescent | Phyciodes pictus | Nymphalidae | Brush-footed |
| Painted Lady | Vanessa cardui | Nymphalidae | Brush-footed |
| Palamedes Swallowtail | Papilio palamedes | Papilionidae | Swallowtails |
| Palatka Skipper | Euphyes pilatka | Hesperiidae | Skippers |
| Pale Cracker | Hamadryas amphichloe | Nymphalidae | Brush-footed |
| Pale Crescent | Phyciodes pallidus | Nymphalidae | Brush-footed |
| Pale Swallowtail | Papilio eurymedon | Papilionidae | Swallowtails |
| Pale-rayed Skipper | Vidius perigenes | Hesperiidae | Skippers |
| Pale-spotted Leafwing | Anaea pithyusa | Nymphalidae | Brush-footed |
| Palmer's Metalmark | Apodemia palmeri | Riodinidae | MetalMarks |
| Palmetto Skipper | Euphyes arpa | Hesperiidae | Skippers |
| Pavon Emperor | Doxocopa pavon | Nymphalidae | Brush-footed |
| Pawnee Skipper | Hesperia pawnee | Hesperiidae | Skippers |
| Pearl Crescent | Phyciodes tharos | Nymphalidae | Brush-footed |
| Pearly Marble | Euchloe hyantis COMPLEX | Pieridae | Yellow, Whites |
| Pearly-gray Hairstreak | Siderus tephraeus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Peck's Skipper | Polites peckius (=coras) | Hesperiidae | Skippers |
| Pelidne Sulphur | Colias pelidne | Pieridae | Yellow, Whites |
| Pepper and Salt Skipper | Amblyscirtes hegon (=samoset) | Hesperiidae | Skippers |
| Persius Duskywing | Erynnis persius | Hesperiidae | Skippers |
| Phaon Crescent | Phyciodes phaon | Nymphalidae | Brush-footed |
| Pima Orangetip | Anthocharis pima | Pieridae | Yellow, Whites |
| Pine Satyr | Paramacera allyni | Nymphalidae | Brush-footed |
| Pine White | Neophasia menapia | Pieridae | Yellow, Whites |
| Pink-edged Sulphur | Colias interior | Pieridae | Yellow, Whites |
| Pink-spotted Swallowtail | Papilio pharnaces | Papilionidae | Swallowtails |
| Pipevine Swallowtail | Battus philenor | Papilionidae | Swallowtails |
| Plain Longtail | Urbanus simplicius | Hesperiidae | Skippers |
| Poling's Giant-Skipper | Agathymus polingi | Hesperiidae | Skippers |
| Polixenes Arctic | Oeneis polixenes (incl. brucei) | Nymphalidae | Brush-footed |
| Polydamas Swallowtail | Battus polydamas | Papilionidae | Swallowtails |
| Potrillo Skipper | Cabares potrillo | Hesperiidae | Skippers |
| Poweshiek Skipperling | Oarisma poweshiek | Hesperiidae | Skippers |
| Prenda Roadside-Skipper | Amblyscirtes prenda | Hesperiidae | Skippers |
| Pronus Longtail | Urbanus pronus | Hesperiidae | Skippers |
| Propertius Duskywing | Erynnis propertius | Hesperiidae | Skippers |
| Purple-washed Skipper | Panoquina sylvicola | Hesperiidae | Skippers |
| Purplish Copper | Lycaena helloides | Lycaenidae | Blues, Hairstreaks, Coppers |
| Purplish-black Skipper | Nisoniades rubescens | Hesperiidae | Skippers |
| Python Skipper | Atrytonopsis python | Hesperiidae | Skippers |
| Queen | Danaus gilippus | Nymphalidae | Brush-footed |
| Queen Alexandra's Sulphur | Colias alexandra (yellow morphs) | Pieridae | Yellow, Whites |
| Question Mark | Polygonia interrogationis | Nymphalidae | Brush-footed |
| Rare Skipper | Problema bulenta | Hesperiidae | Skippers |
| Rawson's Metalmark | Calephelis rawsoni | Riodinidae | MetalMarks |
| Reakirt's Blue | Hemiargus isola | Lycaenidae | Blues, Hairstreaks, Coppers |
| Red Admiral | Vanessa atalanta | Nymphalidae | Brush-footed |
| Red Cracker | Hamadryas amphinome | Nymphalidae | Brush-footed |
| Red Rim | Biblis hyperia | Nymphalidae | Brush-footed |
| Red Satyr | Megisto rubricata | Nymphalidae | Brush-footed |
| Red-banded Hairstreak | Calycopis cecrops | Lycaenidae | Blues, Hairstreaks, Coppers |
| Red-bordered Metalmark | Caria ino | Riodinidae | MetalMarks |
| Red-bordered Pixie | Melanis pixe | Riodinidae | MetalMarks |
| Red-bordered Satyr | Gyrocheilus patrobas | Nymphalidae | Brush-footed |
| Red-crescent Scrub-Hairstreak | Strymon rufofusca | Lycaenidae | Blues, Hairstreaks, Coppers |
| Red-disked Alpine | Erebia discoidalis | Nymphalidae | Brush-footed |
| Red-lined Scrub-Hairstreak | Strymon bebrycia (=buchholzi) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Red-spotted Hairstreak | Ministrymon [Tmolus] echion | Lycaenidae | Blues, Hairstreaks, Coppers |
| Red-spotted Patch | Chlosyne marina (incl. eumeda and melitaeoides) | Nymphalidae | Brush-footed |
| Red-spotted Purple | Limenitis [Basilarchia] arthemis COMPLEX | Nymphalidae | Brush-footed |
| Redundant Skipper | Corticea corticea | Hesperiidae | Skippers |
| Regal Fritillary | Speyeria idalia | Nymphalidae | Brush-footed |
| Relict Fritillary | Boloria kriemhild | Nymphalidae | Brush-footed |
| Reversed Roadside-Skipper | Amblyscirtes reversa | Hesperiidae | Skippers |
| Rhesus Skipper | Polites rhesus | Hesperiidae | Skippers |
| Ridings' Satyr | Neominois ridingsii | Nymphalidae | Brush-footed |
| Rita Blue | Euphilotes rita (incl. pallescens) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Rockslide Checkerspot | Chlosyne whitneyi (incl. damoetas) | Nymphalidae | Brush-footed |
| Rocky Mountain Duskywing | Erynnis telemachus | Hesperiidae | Skippers |
| Rocky Mountain Parnassian | Parnassius smintheus | Papilionidae | Swallowtails |
| Rosita Patch | Chlosyne rosita | Nymphalidae | Brush-footed |
| Rosner's Hairstreak | Callophrys [Mitoura] rosneri | Lycaenidae | Blues, Hairstreaks, Coppers |
| Rounded Metalmark | Calephelis nilus (=perditalis) | Riodinidae | MetalMarks |
| Rounded Oak Hairstreak | Fixsenia polingi | Lycaenidae | Blues, Hairstreaks, Coppers |
| Ruby-spotted Swallowtail | Papilio anchisiades | Papilionidae | Swallowtails |
| Ruddy Copper | Lycaena rubidus (incl. ferrisi) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Ruddy Daggerwing | Marpesia petreus | Nymphalidae | Brush-footed |
| Rural Skipper | Ochlodes agricola | Hesperiidae | Skippers |
| Russet Skipperling | Piruna pirus | Hesperiidae | Skippers |
| Sachem | Atalopedes campestris | Hesperiidae | Skippers |
| Sagebrush Checkerspot | Chlosyne acastus COMPLEX (incl. neumoegeni) | Nymphalidae | Brush-footed |
| Salenus Skipper | Synapte salenus | Hesperiidae | Skippers |
| Salome Yellow | Eurema salome | Pieridae | Yellow, Whites |
| Salt Marsh Skipper | Panoquina panoquin | Hesperiidae | Skippers |
| Saltbush Sootywing | Hesperopsis alpheus | Hesperiidae | Skippers |
| San Emigdio Blue | Plebejus emigdionis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sandhill Skipper | Polites sabuleti | Hesperiidae | Skippers |
| Sandia Hairstreak | Callophrys [Sandia] mcfarlandi | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sara Orangetip | Anthocharis sara COMPLEX | Pieridae | Yellow, Whites |
| Satyr Comma | Polygonia satyrus | Nymphalidae | Brush-footed |
| Scarce Streaky-Skipper | Celotes limpia | Hesperiidae | Skippers |
| Schaus' Swallowtail | Papilio aristodemus | Papilionidae | Swallowtails |
| Scudder's Duskywing | Erynnis scudderi | Hesperiidae | Skippers |
| Scudder's Sulphur | Colias scudderi | Pieridae | Yellow, Whites |
| Shasta Blue | Plebejus [Icaricia] shasta | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sheep Skipper | Atrytonopsis edwardsii (=ovinia) | Hesperiidae | Skippers |
| Sheridan's Hairstreak | Callophrys sheridani (strict sense) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sheridan's Hairstreak | Callophrys sheridani COMPLEX | Lycaenidae | Blues, Hairstreaks, Coppers |
| Short-tailed Skipper | Zestusa dorus | Hesperiidae | Skippers |
| Shy Yellow | Eurema messalina | Pieridae | Yellow, Whites |
| Sickle-winged Skipper | Achlyodes tamenund | Hesperiidae | Skippers |
| Sierra Nevada Parnassian | Parnassius behrii | Papilionidae | Swallowtails |
| Sierra Skipper | Hesperia miriamae | Hesperiidae | Skippers |
| Sierra Sulphur | Colias behrii | Pieridae | Yellow, Whites |
| Silver Emperor | Doxocopa laure | Nymphalidae | Brush-footed |
| Silver-banded Hairstreak | Chlorostrymon simaethis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Silver-bordered Fritillary | Boloria selene | Nymphalidae | Brush-footed |
| Silver-spotted Skipper | Epargyreus clarus (incl. huachuca) | Hesperiidae | Skippers |
| Silvery Blue | Glaucopsyche lygdamus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Silvery Checkerspot | Chlosyne nycteis | Nymphalidae | Brush-footed |
| Simius Roadside-Skipper | Amblyscirtes simius | Hesperiidae | Skippers |
| Skinner's Cloudywing | Achalarus albociliatus | Hesperiidae | Skippers |
| Slaty Roadside-Skipper | Amblyscirtes nereus | Hesperiidae | Skippers |
| Sleepy Duskywing | Erynnis brizo | Hesperiidae | Skippers |
| Sleepy Orange | Eurema nicippe | Pieridae | Yellow, Whites |
| Small Blue | Philotiella speciosa | Lycaenidae | Blues, Hairstreaks, Coppers |
| Small Checkered-Skipper | Pyrgus scriptura | Hesperiidae | Skippers |
| Small Tortoiseshell | Nymphalis urticae | Nymphalidae | Brush-footed |
| Small Wood Nymph | Cercyonis oetus | Nymphalidae | Brush-footed |
| Small-spotted Flasher | Astraptes egregius | Hesperiidae | Skippers |
| Small-spotted Skipperling | Piruna microstictus | Hesperiidae | Skippers |
| Snow's Skipper | Paratrytone snowi | Hesperiidae | Skippers |
| Soapberry Hairstreak | Phaeostrymon alcestis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Soldier | Danaus eresimus | Nymphalidae | Brush-footed |
| Sonora Skipper | Polites sonora | Hesperiidae | Skippers |
| Sonoran Banded-Skipper | Autochton pseudocellus | Hesperiidae | Skippers |
| Sonoran Blue | Philotes sonorensis | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sonoran Hairstreak | Hypostrymon critola (=festata) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sooty Hairstreak | Satyrium fuliginosum | Lycaenidae | Blues, Hairstreaks, Coppers |
| Southern Broken-Dash | Wallengrenia otho | Hesperiidae | Skippers |
| Southern Broken-Dash | Wallengrenia otho COMPLEX | Hesperiidae | Skippers |
| Southern Cloudywing | Thorybes bathyllus (=daunus) | Hesperiidae | Skippers |
| Southern Dogface | Colias [Zerene] cesonia | Pieridae | Yellow, Whites |
| Southern Hairstreak | Satyrium favonius | Lycaenidae | Blues, Hairstreaks, Coppers |
| Southern Oak Hairstreak | Fixsenia favonius COMPLEX (incl. ontario) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Southern Pearly Eye | Enodia portlandia | Nymphalidae | Brush-footed |
| Southern Skipperling | Copaeodes minimus | Hesperiidae | Skippers |
| Spalding's Blue | Euphilotes spaldingi | Lycaenidae | Blues, Hairstreaks, Coppers |
| Spicebush Swallowtail | Papilio troilus | Papilionidae | Swallowtails |
| Spot-celled Sister | Adelpha basiloides | Nymphalidae | Brush-footed |
| Spring Azure | Celastrina ladon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Spring Azure | Celastrina ladon (=argiolus) COMPLEX (incl. echo, lucia) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Spring White | Pontia sisymbrii | Pieridae | Yellow, Whites |
| Square-spotted Blue | Euphilotes battoides COMPLEX | Lycaenidae | Blues, Hairstreaks, Coppers |
| Stallings' Flat | Celaenorrhinus stallingsi | Hesperiidae | Skippers |
| Starred Skipper | Arteurotia tractipennis | Hesperiidae | Skippers |
| Statira Sulphur | Phoebis [Aphrissa] statira | Pieridae | Yellow, Whites |
| Strecker's Giant-Skipper | Megathymus streckeri (incl. texanus) | Hesperiidae | Skippers |
| Striped Hairstreak | Satyrium liparops | Lycaenidae | Blues, Hairstreaks, Coppers |
| Strophius Hairstreak | Allosmaitia strophius (=pion) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Sunrise Skipper | Adopaeoides prittwitzi | Hesperiidae | Skippers |
| Swamp Metalmark | Calephelis mutica | Riodinidae | MetalMarks |
| Swarthy Skipper | Nastra lherminier | Hesperiidae | Skippers |
| Sylvan Hairstreak | Satyrium sylvinus COMPLEX (incl. dryope) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Tail Sulphur | Phoebis intermedia (=neocypris) | Pieridae | Yellow, Whites |
| Tailed Aguna | Aguna metophis | Hesperiidae | Skippers |
| Tailed Copper | Lycaena [Tharsalea] arota | Lycaenidae | Blues, Hairstreaks, Coppers |
| Tailed Orange | Eurema proterpia | Pieridae | Yellow, Whites |
| Tailless Scrub-Hairstreak | Strymon cestri | Lycaenidae | Blues, Hairstreaks, Coppers |
| Tanna Longtail | Urbanus tanna | Hesperiidae | Skippers |
| Tawny Crescent | Phyciodes batesii | Nymphalidae | Brush-footed |
| Tawny Emperor | Asterocampa clyton | Nymphalidae | Brush-footed |
| Tawny Emperor | Asterocampa clyton COMPLEX | Nymphalidae | Brush-footed |
| Tawny-edged Skipper | Polites themistocles | Hesperiidae | Skippers |
| Taxiles Skipper | Poanes taxiles | Hesperiidae | Skippers |
| Telea Hairstreak | Chlorostrymon telea | Lycaenidae | Blues, Hairstreaks, Coppers |
| Teleus Longtail | Urbanus teleus | Hesperiidae | Skippers |
| Texan Crescent | Phyciodes texana | Nymphalidae | Brush-footed |
| Texas Powdered Skipper | Systasea pulverulenta | Hesperiidae | Skippers |
| Texas Roadside-Skipper | Amblyscirtes texanae | Hesperiidae | Skippers |
| Theano Alpine | Erebia theano | Nymphalidae | Brush-footed |
| Theona Checkerspot | Thessalia theona | Nymphalidae | Brush-footed |
| Thicket Hairstreak | Callophrys [Mitoura] spinetorum (incl. millerorum) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Thoas Swallowtail | Papilio thoas | Papilionidae | Swallowtails |
| Three-spotted Skipper | Cymaenes tripunctus | Hesperiidae | Skippers |
| Three-tailed Swallowtail | Papilio pilumnus | Papilionidae | Swallowtails |
| Tiger Mimic-Queen | Lycorea cleobaea (=ceres) | Nymphalidae | Brush-footed |
| Tiny Checkerspot | Dymasia dymas (incl. chara) | Nymphalidae | Brush-footed |
| Titania Fritillary | Boloria titania | Nymphalidae | Brush-footed |
| Tropical Checkered-Skipper | Pyrgus oileus | Hesperiidae | Skippers |
| Tropical Greenstreak | Cyanophrys herodotus | Lycaenidae | Blues, Hairstreaks, Coppers |
| Tropical Leafwing | Anaea troglodyta (incl. aidea) | Nymphalidae | Brush-footed |
| Tropical Least Skipper | Ancyloxypha arene | Hesperiidae | Skippers |
| Turk's-cap White-Skipper | Heliopetes macaira | Hesperiidae | Skippers |
| Twin-spot Skipper | Oligoria maculata | Hesperiidae | Skippers |
| Two-banded Checkered-Skipper | Pyrgus ruralis | Hesperiidae | Skippers |
| Two-spotted Skipper | Euphyes bimacula | Hesperiidae | Skippers |
| Two-tailed Swallowtail | Papilio multicaudata | Papilionidae | Swallowtails |
| Uhler's Arctic | Oeneis uhleri | Nymphalidae | Brush-footed |
| Umber Skipper | Poanes melane | Hesperiidae | Skippers |
| Uncas Skipper | Hesperia uncas | Hesperiidae | Skippers |
| Unsilvered Fritillary | Speyeria adiaste | Nymphalidae | Brush-footed |
| Ursine Giant-Skipper | Megathymus ursus (incl. violae) | Hesperiidae | Skippers |
| Valeriana Cloudywing | Cogia mysie | Hesperiidae | Skippers |
| Variable Checkerspot | Euphydryas chalcedona (colon) COMPLEX | Nymphalidae | Brush-footed |
| Variable Cracker | Hamadryas feronia | Nymphalidae | Brush-footed |
| Variegated Fritillary | Euptoieta claudia | Nymphalidae | Brush-footed |
| Variegated Skipper | Gorgythion begga | Hesperiidae | Skippers |
| Veined Blue | Plebejus [Icaricia] neurona | Lycaenidae | Blues, Hairstreaks, Coppers |
| Veined White-Skipper | Heliopetes arsalte | Hesperiidae | Skippers |
| Vesta Crescent | Phyciodes vesta | Nymphalidae | Brush-footed |
| Viceroy | Limenitis [Basilarchia] archippus | Nymphalidae | Brush-footed |
| Victorine Swallowtail | Papilio victorinus | Papilionidae | Swallowtails |
| Vidler's Alpine | Erebia vidleri | Nymphalidae | Brush-footed |
| Viereck's Skipper | Atrytonopsis vierecki | Hesperiidae | Skippers |
| Viola's Wood Satyr | Megisto viola | Nymphalidae | Brush-footed |
| Violet-banded Skipper | Nyctelius nyctelius | Hesperiidae | Skippers |
| Violet-clouded Skipper | Lerodea arabus | Hesperiidae | Skippers |
| Waiter Daggerwing | Marpesia coresia (=zerynthia) | Nymphalidae | Brush-footed |
| Walker's Metalmark | Apodemia walkeri | Riodinidae | MetalMarks |
| Wandering Skipper | Panoquina errans | Hesperiidae | Skippers |
| Weidemeyer's Admiral | Limenitis [Basilarchia] weidemeyerii | Nymphalidae | Brush-footed |
| West Coast Lady | Vanessa annabella | Nymphalidae | Brush-footed |
| West Virginia White | Pieris virginiensis | Pieridae | Yellow, Whites |
| Western Cloudywing | Thorybes diversus | Hesperiidae | Skippers |
| Western Pine Elfin | Callophrys [Incisalia] eryphon | Lycaenidae | Blues, Hairstreaks, Coppers |
| Western Pygmy-Blue | Brephidium exile | Lycaenidae | Blues, Hairstreaks, Coppers |
| Western Sulphur | Colias occidentalis (yellow morphs) | Pieridae | Yellow, Whites |
| Western Sulphur | Colias occidentalis COMPLEX (orange or partially orange morphs) | Pieridae | Yellow, Whites |
| Western Tailed-Blue | Everes amyntula (incl. herrii) | Lycaenidae | Blues, Hairstreaks, Coppers |
| Western Tiger Swallowtail | Papilio rutulus | Papilionidae | Swallowtails |
| Western White | Pontia occidentalis | Pieridae | Yellow, Whites |
| Whirlabout | Polites vibex | Hesperiidae | Skippers |
| White Admiral | Limenitis [Basilarchia] arthemis arthemis (white-banded) | Nymphalidae | Brush-footed |
| White Angled-Sulphur | Anteos clorinde | Pieridae | Yellow, Whites |
| White M Hairstreak | Parrhasius m-album | Lycaenidae | Blues, Hairstreaks, Coppers |
| White Morpho | Morpho polyphemus | Nymphalidae | Brush-footed |
| White Peacock | Anartia jatrophae | Nymphalidae | Brush-footed |
| White Scrub-Hairstreak | Strymon albata | Lycaenidae | Blues, Hairstreaks, Coppers |
| White-barred Skipper | Atrytonopsis pittacus | Hesperiidae | Skippers |
| White-crescent Longtail | Codatractus alcaeus | Hesperiidae | Skippers |
| White-dotted Cattleheart | Parides alopius | Papilionidae | Swallowtails |
| White-patched Skipper | Chiomara asychis | Hesperiidae | Skippers |
| White-striped Longtail | Chioides catillus (ssp. albofasciatus) | Hesperiidae | Skippers |
| White-tailed Longtail | Urbanus doryssus | Hesperiidae | Skippers |
| White-veined Arctic | Oeneis taygete (bore older name but not in our area) | Nymphalidae | Brush-footed |
| Wild Indigo Duskywing | Erynnis baptisiae | Hesperiidae | Skippers |
| Woodland Skipper | Ochlodes sylvanoides | Hesperiidae | Skippers |
| Wright's Metalmark | Calephelis wrighti | Riodinidae | MetalMarks |
| Xami Hairstreak | Callophrys [Xamia] xami | Lycaenidae | Blues, Hairstreaks, Coppers |
| Xerces Blue | Glaucopsyche xerces | Lycaenidae | Blues, Hairstreaks, Coppers |
| Yehl Skipper | Poanes yehl | Hesperiidae | Skippers |
| Yellow Angled-Sulphur | Anteos maerula | Pieridae | Yellow, Whites |
| Yellow-tipped Flasher | Astraptes anaphus | Hesperiidae | Skippers |
| Yojoa Scrub-Hairstreak | Strymon yojoa | Lycaenidae | Blues, Hairstreaks, Coppers |
| Yucca Giant-Skipper | Megathymus yuccae (incl. coloradensis) | Hesperiidae | Skippers |
| Yuma Skipper | Ochlodes yuma | Hesperiidae | Skippers |
| Zabulon Skipper | Poanes zabulon | Hesperiidae | Skippers |
| Zarucco Duskywing | Erynnis zarucco | Hesperiidae | Skippers |
| Zebra | Heliconius charitonius | Nymphalidae | Brush-footed |
| Zebra Swallowtail | Eurytides marcellus | Papilionidae | Swallowtails |
| Zela Metalmark | Emesis zela | Riodinidae | MetalMarks |
| Zerene Fritillary | Speyeria zerene | Nymphalidae | Brush-footed |
| Zestos Skipper | Epargyreus zestos | Hesperiidae | Skippers |
| Zilpa Longtail | Chioides zilpa | Hesperiidae | Skippers |