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Species Colias alexandra - Queen Alexandra's Sulphur - Hodges#4211

Queen Alexandra's Sulphur - Colias alexandra - female Colias 01a - Colias alexandra - female Queen Alexandra's Sulphur - Colias alexandra - female Colias? - Colias alexandra - male Colias alexandra - male Colias alexandra? - Colias alexandra Colias alexandra - male sulphur butterfly - Colias alexandra
Show images of: caterpillars · adults · both
Classification
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 alexandra (Queen Alexandra's Sulphur - Hodges#4211)
Hodges Number
4211
Size
Wing span: 1 5/8 - 2 1/4 inches (4.2 - 5.7 cm).(1)
Identification
Upper surface of male bright yellow with pale yellow at wing bases; wings edged by narrow black border crossed by yellow veins; cell spot small. Female yellow, sometimes white, with forewing border faded or absent. Underside of hindwing of both sexes green-gray; cell spot white with no surrounding ring.(1)
Range
British Columbia south and east to eastern California, Arizona and New Mexico.(1)
Habitat
Road edges, fields, meadows, sagebrush flats.(1)
Season
One flight from May-August.(1)
Food
Caterpillar hosts: Various plants in the pea family (Fabaceae) including milk vetch (Astragalus), Lupines (Lupinus), and clover (Trifolium) species.

Adult food: Nectar from flowers including blanket flower, milk vetches, and others.(1)
Life Cycle
Males patrol open areas for females. Eggs are laid singly on top of host plant leaves, which the caterpillars eat. Late-stage caterpillars overwinter.(1)