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Euchloe ausonides, the large marble or creamy marblewing, is a species of butterfly that occurs in western North America. It lays eggs on the terminal flower buds of a variety of plants in the mustard family, including introduced Eurasian species, and the larvae feed on the buds, flowers and fruit of these plants. In California, it has witnessed population declines since the 1980s, especially in the Central Valley and the Bay Area, and in Washington, its subspecies the island marble Butterfly (Euchloe ausonides ssp. insulanus) is a candidate for listing under the Endangered Species Act.
- Euchloe ausonides coloradensis (H. Edwards, 1881)
- Euchloe ausonides palaeoreios Johnson, 1977
- Euchloe ausonides mayi F. & R. Chermock, 1940
- Euchloe ausonides transmontana Austin & Emmel, 1998
- Euchloe ausonides insulana Guppy & Shepard, 2001 – Island marble
- Lotts, Kelly; Naberhaus, Thomas. "Large Marble Euchloe ausonides (Lucas, 1852)". Butterflies and Moths of North America. Retrieved 29 March 2018.
- "Euchloe ausonides Large Marble". Digital Atlas of Idaho. Idaho State University.
- Shapiro, Art. "Euchloe ausonides". Art Shapiro's Butterfly Site. Retrieved 29 March 2018.
- "Species Profile for Island large marble Butterfly (Euchloe ausonides insulanus)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 29 March 2018.
- Euchloe, funet.fi
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