Bug FAQLarge Marble
Euchloe ausonides · Order: Lepidoptera · Family: Pieridae
Also called: Creamy Marblewing
How to recognize it
White scales are scattered on the forewing and a black tip pattern is present. The underside of the hindwing has compact green marbling.
Source: Wikipedia
Size
It is a medium-sized butterfly with a wingspan ranging from 3.8 to 5.1 cm.
Source: Wikipedia
Where it lives
It prefers open, sunny habitats like valleys, hillsides, fields and meadows.
Source: Wikipedia
What it eats
Larvae feed on buds, flowers and fruits. Adults sip nectar from mustard-family flowers and other plants.
Source: Wikipedia
Life cycle
Adults emerge in late spring, live 7 to 9 days, then lay eggs that hatch in 10 to 12 days into caterpillars.
Source: Wikipedia
When you see it
Adults appear in late spring and are active for about a week.
Source: Wikipedia
Where it comes from
It is native to western North America, from southern Alaska down to central California and northern New Mexico.
Source: Wikipedia
Where it is found in the US
Recorded in 18 of 51 states and DC. Most records: California, Colorado, Alaska, Washington, Utah, Idaho, Wyoming, Montana.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When do large marble butterflies appear?
They emerge in late spring and are active for about 7 to 9 days.
Source: Wikipedia
Same family (Pieridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Euchloe_ausonides
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.