Bug FAQCalifornia Marble
Euchloe hyantis · Order: Lepidoptera · Family: Pieridae
Also called: Pearly Marble, Pearly Marblewing
The California marble butterfly has a wingspan of about 28 to 37 mm. Adults fly from April through early July, producing one generation each year, and the chrysalids overwinter. Its caterpillars eat the flowers and fruits of mustard-family plants, especially species of Streptanthus.
Source: Wikipedia
How to recognize it
Euchloe hyantis, also called the California marble, belongs to the butterfly family Pieridae.
Source: Wikipedia
Size
The wingspan ranges from 28 to 37 mm (1.1 to 1.5 in).
Source: Wikipedia
Where it lives
It lives in rocky canyons, cliffs, moraines and gravelly flats.
Source: Wikipedia
Life cycle
Adults are on the wing from April to early July, producing one generation per year. The chrysalids spend the winter in hibernation.
Source: Wikipedia
When you see it
Adults appear from April through early July.
Source: Wikipedia
Where it is found in the US
Recorded in 13 of 51 states and DC. Most records: California, Oregon, Arizona, Colorado, Montana, Nevada, New Mexico, Utah.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When can I see California marble butterflies?
Adults fly from April to early July, with one generation each year.
Source: Wikipedia
What do the caterpillars eat?
The larvae feed on flowers and fruits of mustard-family plants, especially Streptanthus.
Source: Wikipedia
Where does this butterfly live?
It inhabits rocky canyons, cliffs, moraines and gravelly flats on the West Coast of North America.
Source: Wikipedia
Same family (Pieridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Euchloe_hyantis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-25 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-25.