Based on 1,205 research-grade iNaturalist observations in Kansas, Hackberry Emperor is most often recorded in June; in Kansas it behaves like a summer visitor / breeder. It ranks #3 among butterflies recorded in the state in our data.
Asterocampa celtis
Hackberry Emperor in Kansas 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 Kansas in June

Great Spangled Fritillary

Variegated Fritillary

Monarch

Eastern Tailed-Blue

Pearl Crescent

Red Admiral

Eastern Tiger Swallowtail

Question Mark
Places to look in Kansas
Botanica, The Wichita Gardens
Mushroom Rock State Park
Kanopolis State Park
Cedar Bluff State Park
Prairie Dog State Park
State ParkWilson State Park
FAQ
When does Hackberry Emperor appear in Kansas?
Mainly June–September, with the most records in June.
How common is Hackberry Emperor in Kansas?
It ranks #3 by number of iNaturalist observations among butterflies in Kansas (1,205 records in our sample).