
Based on 1,565 research-grade iNaturalist observations in Missouri, Zebra Swallowtail is most often recorded in June; in Missouri it behaves like a summer visitor / breeder. It ranks #16 among butterflies recorded in the state in our data.
Eurytides marcellus
Zebra Swallowtail in Missouri by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Missouri in June

Great Spangled Fritillary

Pipevine Swallowtail

Eastern Tailed-Blue
Hackberry Emperor

Monarch

Pearl Crescent

Spicebush Swallowtail

Eastern Tiger Swallowtail
Places to look in Missouri
Missouri Botanical Garden
Mark Twain National Forest
Missouri State Arboretum
Big Oak Tree State Park
Table Rock State Park
Mark Twain Birthplace State Historic Site
FAQ
When does Zebra Swallowtail appear in Missouri?
Mainly April–July, with the most records in June.
How common is Zebra Swallowtail in Missouri?
It ranks #16 by number of iNaturalist observations among butterflies in Missouri (1,565 records in our sample).