California dogface butterfly

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California dogface butterfly
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Pieridae
Subfamily: Coliadinae
Genus: Colias
Species: C. eurydice
Binomial name
Colias eurydice
Boisduval, 1855

The California dogface butterfly (Colias eurydice or Zerene eurydice Boisduval) has been the state insect of the U.S. state of California since 1972. Its range is limited to that state. California was the first state to choose a state insect -- and thus, to choose a butterfly -- though most of the other states have now followed, and many even have both a state insect and state butterfly.

The name comes from a wing pattern resembling a dog's face (some think it looks like a poodle) which is found on the male of the species. Its wings are an iridescent bluish-black, orange and sulfur-yellow in color. The female has a small black dot on each of its yellow forewings. The typical forewing length is between 22 to 31 mm. See picture (main page) -- unfortunately lacking the dog-pattern.

Larvae feed on False Indigo (species name: Amorpha californica) and adults feed on flower nectar. They are said to be especially fond of purple flowers.

They are hard to get close to, are hard to catch unless nectaring at flowers, and are hard to get a photograph of with their wings open because they fly very fast. In the Santa Ana Mountains in Southern California, adult Dogface butterflies can often be seen nectaring at roadside thistles.

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