Better photos are marked in bold. Common names generally follow the NABA list; taxonomy generally does as well, except where Opler & Warren disagree (and all such cases are noticed in the species pages).

Corrections for any pictures on the site would be more than welcome.

Swallowtails

Clodius Parnassian: Parnassius clodius (ssp. claudianus and baldur)
Anise Swallowtail: Papilio zelicaon
Western Tiger Swallowtail: Papilio rutulus
Pale Swallowtail: Papilio eurymedon
Pipevine Swallowtail: Battus philenor

Whites and Sulphurs

Pine White: Neophasia menapia
Checkered White: Pontia protodice
Western White: Pontia occidentalis
Margined White: Pieris [napi] marginalis
Cabbage White: Pieris rapae
Large Marble: Euchloe ausonides
"California" Pearly Marble: Euchloe hyantis hyantis
Sara Orangetip: Anthocharis sara
Orange Sulphur: Colias eurytheme

Gossamer-wings

American Copper: Lycaena phleas, ssp. hypophleas
Tailed Copper: Lycaena arota
Lustrous Copper: Lycaena cupreus
Great Copper: Lycaena xanthoides
Edith's Copper: Lycaena editha
Gorgon Copper: Lycaena gorgon
Ruddy Copper: Lycaena rubidus
Blue Copper: Lycaena heteronea
Purplish Copper: Lycaena helloides
Lilac-bordered Copper: Lycaena nivalis
Golden Hairstreak: Habrodais grunus
Sooty Hairstreak: Satyrium fuliginosum
Behr's Hairstreak: Satyrium behrii
California Hairstreak: Satyrium californica
Sylvan Hairstreak: Satyrium sylvinus
Mountain Mahogany Hairstreak: Satyrium tetra
Hedgerow Hairstreak: Satyrium saepium
Brown Elfin: Callophrys augustinus
Moss' Elfin ("Doudoroff's" and "San Bruno"): Callophrys mossii
Western Pine Elfin: Callophrys eryphon
Thicket Hairstreak: Callophrys spinetorum
Nelson's Hairstreak: Callophrys [gryneus] nelsoni
Muir's Hairstreak: Callophrys [gryneus] muiri
Coastal Green Hairstreak: Callophrys dumetorum (syn. viridis)
Bramble Hairstreak: Callophrys perplexa
Sheridan's Hairstreak (Callophrys sheridanii): C.s.lemberti
Gray Hairstreak: Strymon melinus
Western Pygmy-Blue: Brephidium exile
Western Tailed-Blue: Everes amyntula
Eastern Tailed-Blue: Everes comyntas
Echo [Spring] Azure: Celastrina [ladon] echo
Sonoran Blue: Philotes sonorensis
Arrowhead Blue: Glaucopsyche piasus
Silvery Blue: Glaucopsyche lygdamus
Anna's [Northern] Blue: Lycaeides [idas] anna
Boisduval's Blue, Plebejus icarioides: P.i.icarioides
P.i.missionensis, "Mission"
P.i.pardalis, "Pardalis"
P.i.parapheres, "Point Reyes"
P.i.falla
Greenish Blue: Plebejus saepiolus
Shasta Blue: Plebejus shasta
Melissa Blue: Plebejus melissa
Acmon Blue: Plebejus acmon
Acmon/Lupine Blue: Plebejus acmon/lupini
Lupine Blue: Plebejus lupini
Un-id'd Dotted Blues: Euphilotes sp.
Bernardino [Square-spotted] Dotted-Blue: Euphilotes [battoides] bernardino
Square-spotted Blue (Euphilotes battoides): E.b.battoides
Intermediate [Square-spotted] Blue (Euphilotes [battoides] intermedia): E.i.oregonensis
Pacific Dotted-Blue (Euphilotes enoptes): E.e.enoptes

E.e.smithi, "Smith's"

E.e.bayensis

E.e.tildeni
Arctic Blue: Agriades glandon

Metalmarks

Mormon Metalmark: Apodemia mormo

Brushfoots

Coronis Fritillary (Speyeria coronis): S. c. coronis
S. c. simaetha
Zerene Fritillary (Speyeria zerene): S.z.zerene
S.z.malcolmi
S.z.myrtleaea "Myrtle" Zerene Fritillary
Callippe Fritillary (Speyeria callippe): S. c. callippe
S. c. comstocki
S. c. laurina
S. c. nevadensis
Great Basin Fritillary: S. e. egleis
S. e. oweni
Unsilvered Fritillary (Speyeria adiaste): S. a. adiaste
S. a. clemencei
Hydaspe Fritillary: Speyeria hydaspe
Mormon Fritillary: Speyeria mormonia
Pacific Fritillary: Boloria epithore epithore, sierra, and chermocki
Leanira Checkerspot: Thessalia leanira
Northern Checkerspot (Chlosyne palla): Chlosyne palla palla
Chlosyne palla altasierra
Chlosyne palla australomontana
Gabb's Checkerspot: Chlosyne gabbii
Rockslide Checkerspot: Chlosyne whitneyi
Sagebrush Checkerspot: Chlosyne acastus
Hoffmann's Checkerspot: Chlosyne hoffmanni
Pearl Crescent: Phyciodes tharos
Field Crescent: Phyciodes pulchellus (syn. campestris)
California Crescent: Phyciodes orseis herlani (possible)
Mylitta Crescent: Phyciodes mylitta
Variable Checkerspot (Euphydryas chalcedona): E. c. chalcedona
E. c. sierra
E. c. variicolor (Sonora Pass)
Edith's Checkerspot (Euphydryas editha): CA coast (E.e. editha)?
E.e. nubigena, "Cloud-born"
E. e. rubicunda
Satyr Comma: Polygonia satyrus
"Zephyr" Comma: Polygonia gracilis zephyrus
Oreas Comma: Polygonia oreas
California Tortiseshell: Nymphalis californica
Mourning Cloak: Nymphalis antiopa
Red Admiral: Vanessa atalanta
Painted Lady: Vanessa cardui
American Lady: Vanessa virginiensis
West Coast Lady: Vanessa annabella
Common Buckeye: Junonia coenia
Lorquin's Admiral: Limenitis lorquini
California Sister: Adelpha bredowii
California [Common] Ringlet: Coenonympha [tullia] california
Common Wood-Nymph: Cercyonis pegala
Great Basin Wood-Nymph: Cercyonis sthenele
Small Wood-Nymph: Cercyonis oetus
Riding's Satyr: Neominois ridingsii
Chryxus Arctic: Oeneis chryxus
Queen: Danaus gilippus

Skippers

Silver-spotted Skipper: Epargyreus clarus
Northern Cloudywing: Thorybes pylades
Western Cloudywing: Thorybes diversus
Mexican Cloudywing: Thorybes mexicana
Propertius Duskywing: Erynnis propertius
Mournful Duskywing: Erynnis tristis
Pacuvius Duskywing (Erynnis pacuvius): E.p.lilius, "Dyar's"
E.p.pernigra, "Grinnell's"
Two-banded Checkered-Skipper: Pyrgus ruralis
Common Checkered-Skipper: Pyrgus communis
Northern White-Skipper: Heliopetes ericetorum
Fiery Skipper: Hylephila phyleus
Juba Skipper: Hesperia juba
Western Branded Skipper: Hesperia [comma] colorado, ssp. dodgei and "yosemite"
Lindsey's Skipper: Hesperia lindseyi
Columbian Skipper: Hesperia columbia
Sandhill Skipper (Polites sabuleti): P. s. sabuleti
P. s. tecumseh
Sonoran Skipper: Polites sonora
Sachem: Atalopedes campestris
Woodland Skipper: Ochlodes sylvanoides
Rural Skipper: Ochlodes agricola
Yuma Skipper: Ochlodes yuma
Umber Skipper: Poanes melane
Eufala Skipper: Lerodea eufala
Yucca Giant-Skipper: Megathymus yuccae

Moths

Unidentified moths - please help!
Alypia mariposa
Heliothodes diminutiva
Mesoleuca gratulata
Hemaris diffinis
Chlorosea banksaria
Grammia ornata
Synedoida ochracea
Synedoida divergens
Other Synedoida spp.
Syngrapha sp.?
Gnophaela latipennis
Adela septentrionella