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Species Colias harfordii - Harford's Sulphur - Hodges#4211.2

Colias harfordii ID for a Sulfur #1? - Colias harfordii - male Sulphur -  Harford's - Colias harfordii - male Sulphur butterfly - Colias harfordii - male Sulphur butterfly - Colias harfordii - male Harford's Sulphur - Colias harfordii - male Harford's or Orange - Colias harfordii
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Papilionoidea (Butterflies and Skippers)
Family Pieridae (Whites, Sulphurs, Yellows)
Subfamily Coliadinae (Sulphurs and Yellows)
Genus Colias
Species harfordii (Harford's Sulphur - Hodges#4211.2)
Hodges Number
Wingspan 44-51 mm
Photos of dorsal and ventral views can be found at Butterflies of America

Very like Alexandra Sulphur above, but apparently no white female form. Below like Clouded Sulphur, except discal spot below often (usually?) without a small satellite spot. Orange sulphur with wings somewhat different in shape, usually with orange above, dark borders wide and prominent on both males and females, more "smooth" scaling below, nearly always with satellite spot, and white females common.
Southern California, coastal ranges, south to northern Baja California.
Chaparral, woodland clearings
February-May and from June-August (two flights).
Life Cycle
Larvae feed on Rattleweed, Astragalus douglasii.
See Also
Queen Alexandra's Sulphur - Colias alexandra
Internet References