Based on 1,608 research-grade iNaturalist observations in Illinois, American Lady is most often recorded in May; in Illinois it behaves like a summer visitor / breeder. It ranks #22 among butterflies recorded in the state in our data.
Vanessa virginiensis
American Lady in Illinois 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 Illinois in May
Red Admiral
Monarch
Pearl Crescent
Question Mark
Eastern Tiger Swallowtail
Zabulon Skipper
Black Swallowtail
Silver-spotted Skipper
Places to look in Illinois
State ParkCahokia
Botanical GardenMorton Arboretum
National ForestShawnee National Forest
Botanical GardenChicago Botanic Garden
Botanical GardenLadd Arboretum
State ParkStarved Rock State Park
FAQ
When does American Lady appear in Illinois?
Mainly April–July, with the most records in May.
How common is American Lady in Illinois?
It ranks #22 by number of iNaturalist observations among butterflies in Illinois (1,608 records in our sample).