Based on 2,878 research-grade iNaturalist observations in Oklahoma, Hackberry Emperor is most often recorded in September; in Oklahoma it behaves like a summer visitor / breeder. It ranks #3 among butterflies recorded in the state in our data.
Asterocampa celtis
Hackberry Emperor in Oklahoma 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 Oklahoma in September
Monarch
Gulf Fritillary
Huron Skipper
Gray Hairstreak
Pipevine Swallowtail
Fiery Skipper
Common Buckeye
Variegated Fritillary
Places to look in Oklahoma
State ParkAlabaster Caverns State Park
State ParkRobbers Cave State Park
State ParkNatural Falls State Park
National ForestOzark–St. Francis National Forest
National Wildlife RefugeWichita Mountains Wildlife Refuge
State ParkBoiling Springs State Park
FAQ
When does Hackberry Emperor appear in Oklahoma?
Mainly May–September, with the most records in September.
How common is Hackberry Emperor in Oklahoma?
It ranks #3 by number of iNaturalist observations among butterflies in Oklahoma (2,878 records in our sample).