Subfamily Pierinae — Whites

Butterfly Link to photos Where and When Host plant
Pontia beckerii
Becker's White
Deserts where host Bladderpod grows, Feb - October; dependable at Yaqui Well, Cottonwood Spring Bladderpod (Isomeris arborea), Prince's plume (Stanleya pinnata)
Pontia protodice
Checkered White
All year, many rural areas and occasionally in gardens; easily found at Bolsa Chica Mustards (Brassicaceae) inc. London Rocket
Pontia sisymbrii sisymbrii
Spring White
Mostly Mar - July; mountains, deserts Mustards (Brassicaceae)
Pieris rapae
Cabbage White
Common year-round even in urban areas; non-native Mustards (Brassicaceae) inc. Nasturtiums
Euchloe hyantis hyantis
'California' Pearly Marble
Late March to mid-July; Anza-Borrego seems to be the best spot Mustards (Brassicaceae)
Euchloe hyantis nr lotta
(high E. San Bern Mtns population)
East side of San Bernardino Mtns around Big Bear, April - June?, one brood Usually Tansy Mustard (Descurainia)
Euchloe hyantis andrewsi
Andrew's Marble
June to early July, San Bernardino Mtns 5000-6000' elev. Streptanthus bernardinus and Arabis holboellii
Euchloe hyantis lotta
'Desert' Pearly Marble
Deserts such as Joshua Tree, late Feb to early June Mustards (Brassicaceae)
Anthocharis cethura cethura
Desert Orangetip
Feb to early May, desert edge; TL is Little Rock nr Pearblossom Mustards (Brassicaceae) including Lacepod (Thysanocarpus curvipes) and Tansy Mustard (Descurainia pinnata)
Anthocharis cethura catalina
'Catalina' Desert Orangetip
Catalina Island only March - April Mustards (Brassicaceae)
Anthocharis cethura morrisoni
'Morrison's' Desert Orangetip
Feb to mid-April, Kern County  
Anthocharis cethura mojavensis
'Mojave' Desert Orangetip
Well out in the mojave desert, such as Providence Mtns, late Feb to early May  
Anthocharis sara sara
Sara Orangetip
Local mtns such as Malibu Creek, San Gabriels, two broods Feb to June Several mustards (Brassicaceae) including Lacepod (Thysanocarpus curvipes), Nevada Rockcress (Arabis perennans)
Anthocharis lanceolata australis
'Grinell's' Gray Marble
Mostly mountains, late March to May Sicklepod Rockcress (Arabis sparsiflora)
Anthocharis lanceolata desertolimbus
'Desert Edge' Gray Marble
Late Feb to early April, Anza-Borrego up to Palm Springs Nevada Rockcress (Arabis perennans)
 

Subfamily Coliadinae — Sulphurs

Butterfly Link to photos Where and When Host plant
Colias eurytheme
Orange Sulphur
Feb to Nov, common in rural areas Many Pea family members inc. Astragalus, Lotus and Lupine spp.
Colias harfordii
Harford's Sulphur
Late March to early Oct, most mountain ranges Locoweeds, Deerweed (Pea family)
Zerene cesonia cesonia
Southern Dogface
Eastern Calif. ranges, April to June and a fall brood around Sept - Oct False Indigo (Amorpha fruticosa), Clovers, others
Zerene eurydice
California Dogface
Local Mtns April to Sept (2 broods); common in San Bernardinos late summer False Indigo (Amorpha fruticosa)
Phoebis sennae marcellina
'Southwestern' Cloudless Sulphur
Common in gardens and parks around host Senna year-round Senna (Cassia spp.)
Phoebis agarithe fisheri
Large Orange Sulphur
Link to Phoebis agarithe page Usually far east Cal., but I've seen them in Palm Desert, most of the year Senna?, Pithecellobium?
Phoebis philea philea
Orange-barred Sulphur
May be breeding in San Diego; stray elsewhere, most of the year  
Eureme mexicana
Mexican Yellow
Summer through fall, desert side of mountains Senna (Cassia spp.)
Abaeis nicippe
Sleepy Orange
Most of the year, mostly deserts Senna (Cassia spp.)
Nathalis iole
Dainty Sulphur
Deserts and mountains; flies March - early November Several inc. Beggar-ticks, Marigolds, Spanish Needles